Silicon compound, liquid crystal composition and liquid crystal display

Abstract

Silicon compounds having a low viscosity and a low threshold voltage and improved mutual solubility, a liquid crystal composition comprising the same and a liquid crystal display using the liquid crystal composition. The silicon compound is represented by formula (1): wherein Y1 is, for example, alkylene having 1 to 10 carbon atoms, Y2 is, for example, hydrogen, halogen, —CN, —C≡C—CN, or alkyl having 1 to 10 carbon atoms; A1, A2, A3, and A4 each are, for example, independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, or 1,4-phenylene; Z1, Z2 and Z3 each are independently a single bond, —(CH2)2—, —OCH2—, —CH2O—, —CH═CH—, —C≡C—, —(CH2)4—, —O(CH2)3—, —(CH2)3O—, —COO—, —OCO—, —OCF2—, or —CF2O—; and p and q each are independently 0 or 1.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a novel liquid crystalline compound and a liquid crystal composition (hereinafter referred to merely as a composition according to circumstances). More specifically, it relates to a liquid crystalline compound having a SiH 3 group at an end, a composition comprising the same and a liquid crystal display constituted using this composition. The term “liquid crystalline compound” used in the present invention is a general term for a compound showing a liquid crystal phase and a compound which does not show a liquid crystal phase but is useful as a component for a liquid crystal composition.

2. Description of the Related Art

A liquid crystal display (LCD) making use of characteristics of a nematic liquid crystal phase is widely used for various uses including monitors for personal computers and portable telephones, and demand therefor has been growing large year by year. In accordance with it, improvement items for performances required for LCD have come to extend over many divergences such as an expansion in an operable temperature range, a shift to a high density and coloring of a display picture plane, an acceleration in response and an expansion in a viewing angle. Various display modes using electro-optical effects, such as a DS (Dynamic Scattering) mode, a TN (Twisted Nematic) mode, a GH (Guest Host) mode, an STN (Super Twisted Nematic) mode, an IPS (In-Plane switching) mode, a VA (Vertical Alignment) mode and OCB (Optically Compensated Bend) have been proposed in order as means for solving them.

In such situation, various characteristics are required to a composition used for LCD according to the respective display modes. First, the physical property values such as a birefringence (Δn), a dielectric anisotropy (Δ∈), a viscosity (η), a conductivity and an elastic constant ratio K 33 /K 11 (K 33 : bend elastic constant and K 11 : spray elastic constant) of a liquid crystal composition are required to have values which are optimum for a display mode and a form of an element. Further, in order to achieve high-speed response in any of the LCD's shown above, a composition having a low viscosity is required, and a liquid crystalline compound has to be indispensably reduced as well in a viscosity. In addition thereto, given as common items of characteristics required to a composition are stability against moisture, light, heat and air which are usually present under an use environment and stability against an electric field and electromagnetic irradiation. Further, it is important that a liquid crystalline compound constituting a composition is chemically stable under use conditions and that they have a good solubility with each other.

In the existing state, however, it is very difficult to solve these problems only with the existing liquid crystal compounds and compositions, and it is an urgent matter to develop a novel liquid crystalline compound and composition which can meet the various requirements described above.

In recent years, development of various techniques in a liquid crystal display has been tried for the purpose of an enlargement in a picture plane. Especially, liquid crystal compositions which contribute largely to a reduction in power consumption and high speed response are desired to be developed. It is essential for a reduction in power consumption to further reduce a threshold voltage of a composition (E. Jakeman et al., Phys. Lett., 39A. 69 (1972)). Also, a low viscosity is important as well for high speed response. Various compounds have so far been developed in order to achieve these objects. For example, compounds having a silyl group in a molecule represented by the following formulas (a), (b) and (c) are known respectively according to Japanese Patent Application Laid-Open No. 9653/1994, Japanese Patent Application Laid-Open No. 2878/1995 and Japanese Patent Application Laid-Open No. 2879/1995:

In these compounds, silicon is substituted with three alkyl groups. For example, the present inventors measured the physical property values of a compound having a propyldimethylsilyl group represented by the following formula (d) to find the problem that it had not only a markedly high viscosity but also an unsatisfactory mutual solubility with other components constituting a composition:

Physical property measurement: a nematic phase-isotropic phase transition temperature (NI) and a viscosity (η) at 20° C. of a liquid crystal composition ZLI-1132 manufactured by Merck Co., Ltd. were 72.6° C. and 26.7 mPa·s respectively. Then, 15% by weight of the compound represented by the formula (d) was added to 85% by weight of this composition, and NI and η of the resulting composition were determined to find that they were 15° C. or lower and 39.7 mPa·s respectively. It has been found from this result that a composition prepared using the compound represented by the formula (d) is not only notably increased in a viscosity but also reduced in NI by 50° C. or lower. Further, the compound represented by the formula (d) was inferior in mutual solubility with the other compositions.

SUMMARY OF THE INVENTION

An object of the present invention is to solve problems on conventional techniques and provide a novel silicon compound which has a low viscosity and a low threshold voltage and which is improved in mutual solubility, a composition comprising the same and a liquid crystal display using the above composition.

In order to achieve the objects described above, the following inventions are claimed for the grant of a patent in the present application.

[1] A silicon compound represented by formula (1):

wherein Y 1 is alkylene having 1 to 10 carbon, in which any —CH 2 — in this alkylene may be replaced by —O—, —S—, —CO—, —CH═CH— or —C≡C—, but —O— and —O—, —S— and —S—, —O— and —S—, —O— and SiH 3 , or —S— and SiH 3 are not adjacent, and at least one hydrogen in the alkylene may be replaced by halogen or —CN; Y 2 is hydrogen, halogen, —CN, —C≡C—CN, or alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but —O— and —O—, —S— and —S—, or —O— and —S— are not adjacent, and any hydrogen in the alkyl may be replaced by halogen or —CN; A 1 , A 2 , A 3 , and A 4 each are independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, or 1,4-phenylene in which any hydrogen is replaced by halogen; in which any hydrogen in 1,4-cyclohexylene or 1,4-cyclohexenylene may be replaced by halogen, any —CH 2 — in these rings may be replaced by —O—, but —O— and —O— are not adjacent, and any —CH═ in 1,4-phenylene may be replaced by —N═; Z 1 , Z 2 and Z 3 each are independently a single bond, —(CH 2 ) 2 —, —OCH 2 —, —CH 2 O—, —CH═CH—, —C≡C—, —(CH 2 ) 4 —, —O(CH 2 ) 3 —, —(CH 2 ) 3 O—, —COO—, —OCO—, —OCF 2 —, or —CF 2 O—; and p and q each are independently 0 or 1.

[2] The silicon compound defined in the above item [1], wherein in formula (1) described above, p and q are 0; A 1 and A 2 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z 1 is a single bond, —(CH 2 ) 2 —, —CH=CH—, —C=C—, —(CH 2 ) 4 —, —COO—, —OCO—, —OCF 2 —, or —CF 2 O—.

[3] The silicon compound defined in the above item [1], wherein in formula (1) described above, p is 1, and q is 0; A 1 , A 2 and A 3 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z 1 and Z 2 each are independently a single bond, —(CH 2 ) 2 —, —CH═CH—, —C≡C—, —COO—, —OCO—, —(CH 2 ) 4 —, —OCF 2 —, or —CF 2 O—.

[4] The silicon compound defined in the above item [1], wherein in formula (1) described above, p and q are 1; A 1 , A 2 , A 3 , and A 4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z 1 , Z 2 and Z 3 each are independently a single bond, —(CH 2 ) 2 —, —CH═CH—, —C≡C—, —COO—, —OCO—, —(CH 2 ) 4 —, —OCF 2 —, or —CF 2 O—.

[5] The silicon compound defined in the above item [1], wherein in formula (1) described above, Y 1 is alkylene having 1 to 10 carbon, in which any —CH 2 — in this alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH 3 are not adjacent; Y 2 is alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O—, —CH═CH— or —C≡C—, but —O— and —O— are not adjacent; and A 1 , A 2 , A 3 , and A 4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene, or pirimidine-2,5-diyl.

[6] The silicon compound defined in the above item [1], wherein in formula (1) described above, Y 1 is alkylene having 1 to 10 carbon, in which any —CH 2 — in the alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH 3 are not adjacent; Y 2 is halogen, —CN, —C≡C—CN or alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O—, but —O— and —O— are not adjacent, and at least one hydrogen is replaced by halogen; and A 1 , A 2 , A 3 , and A 4 each are independently 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which at least one hydrogen is replaced by halogen, or pirimidine-2,5-diyl.

[7] The silicon compound defined in the above item [1], wherein in formula (1) described above, Y 1 is alkylene having 1 to 10 carbon, in which any —CH 2 — in the alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH 3 are not adjacent; Y 2 is alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O—, —S— or —CH═CH—, but —O— and —O—, —S— and —S—, or —O— and —S— are not adjacent; A 1 , A 2 , A 3 , and A 4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH 2 — are replaced by —O—, 1,4-phenylene in which a 2-position is replaced by halogen, 1,4-phenylene in which a 3-position is replaced by halogen, or 1,4-phenylene in which a 2-position and a 3-position are replaced by halogen, and one of A 1 , A 2 , A 3 , and A 4 is always 1,4-phenylene in which a 2-position or a 3-position is replaced by halogen or 1,4-phenylene in which a 2-position and a 3-position are replaced by halogen.

[8] A liquid crystal composition comprising at least one silicon compound defined in any one of the items [1] to [7].

[9] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any one of the items [1] to [7] as a first component and at least one compound selected from the group of compounds represented by formulas (2), (3) and (4) as a second component:

wherein R 1 is alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the group may be replaced by fluorine; X 1 is fluorine, Chlorine, —OCF 3 , —OCF 2 H, —CF 3 , —CF 2 H, —CFH 2 , —OCF 2 CF 2 H, or —OCF 2 CFHCF 3 ; L 1 and L 2 each are independently hydrogen or fluorine; Z 4 and Z 5 each are independently —(CH 2 ) 2—, —(CH 2 ) 4 —, —COO—, —CF 2 O—, —OCF 2 —, —CH═CH—, or a single bond; a ring B and a ring C each are independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which at least one hydrogen is replaced by fluorine; and a ring D is 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen is replaced by fluorine.

[10] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any one of the items [1] to [7] as the first component and at least one compound selected from the group of compounds represented by formulas (5) and (6) as a second component:

wherein R 2 and R 3 each are independently alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; X 2 is —CN or —C≡C—CN; a ring E is 1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; a ring F is 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which hydrogen is replaced by fluorine, or pyrimidine-2,5-diyl; a ring G is 1,4-cyclohexylene or 1,4-phenylene; Z 6 is —(CH 2 ) 2 —, —COO—, —CF 2 O—, —OCF 2 —, or a single bond; L 3 , L 4 and L 5 each are independently hydrogen or fluorine; and a, b and c each are independently 0 or 1.

[11] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any one of the items [1] to [7] as the first component and at least one compound selected from the group of compounds represented by formulas (7), (8) and (9) as a second component:

wherein R 4 and R 5 each are independently alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring I and a ring J each are independently 1,4-cyclohexylene or 1,4-phenylene; L 6 , L 7 , L 8 and L 9 each are independently hydrogen or fluorine, and all of them are not hydrogen simultaneously; and Z 7 and Z 8 each are independently —(CH 2 ) 2 —, —COO— or a single bond.

[12] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any of the items [1] to [7] as the first component, at least one compound selected from the group of the compounds represented by formulas (2), (3) and (4) described in the above item [9] as the second component, and at least one compound selected from the group of compounds represented by formulas (10), (11) and (12) as a third component:

wherein R 6 and R 7 each are independently alkyl having 1 to 10 carbon, in which any —CH 2 — in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring K, a ring M and a ring N each are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which hydrogen is replaced by fluorine; and Z 9 and Z 10 each are independently —C≡C—, —COO—, —(CH 2 ) 2 —, —CH═CH— or a single bond.

[13] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any one of the items [1] to [7] as the first component, at least one compound selected from the group of the compounds represented by formulas (5) and (6) described in the above item [10] as the second component, and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) described in the above item [12] as the third component.

[14] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any one of the items [1] to [7] as the first component, at least one compound selected from the group of the compounds represented by formulas (7), (8) and (9) described in the above item [11] as the second component and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) described in the above item [12] as the third component.

[15] The liquid crystal composition defined in the above item [8], comprising at least one silicon compound described in any of the items [1] to [7] as the first component, at least one compound selected from the group of the compounds represented by formulas (2), (3) and (4) described in the above item [9] as the second component, at least one compound selected from the group of the compounds represented by formulas (5) and (6) described in the above item [10] as the third component, and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) described in the above item [12] as a fourth component.

[16] A liquid crystal composition comprising at least one liquid crystal composition defined in the items [8] and further comprising at least one optically active compound.

[17] A liquid crystal display using the liquid crystal composition defined in any of the items [8] to [15].

The compound (1) of the present invention is a compound having a SiH 3 group at an end and 2 to 4 six-membered rings (hereinafter referred to as a bicyclic system to a tetracyclic system), and it is physically and chemically very stable under conditions on which a display is used. Further, six-membered rings, a bonding group and side chains constituting the compound (1) having a good mutual solubility, a low viscosity and a low threshold voltage are suitably selected, whereby the desired physical property values can optionally be controlled. The preferred compounds are shown below.

Y 1 and Y 2 mean the same as those described in the item [1] described above.

Capable of being given as preferred Y 1 is alkylene, alkyleneoxy, alkyleneoxyalkylene, alkenylene, alkenyleneoxy, alkenyleneoxyalkylene or alkyleneoxyalkenylene which has 1 to 10 carbon atoms. Among them, the most preferred group includes methylene, ethylene, propylene, butylene, pentylene, hexylene, heptylene, methyleneoxy, ethyleneoxy, propyleneoxy, butyleneoxy, pentyleneoxy, hexyleneoxy, heptyleneoxy, methyleneoxymethylene, ethyleneoxymethylene, propyleneoxymethylene, methyleneoxyethylene, ethyleneoxyethylene, methyleneoxyproeylene, ethyleneoxypropylene, vinylene, 1-propenylene, 2-propenylene, 1-butenylene, 2-butenylene, 3-butenylene, 2-prpenyleneoxy and 2-butenyleneoxy.

Capable of being given as preferred Y 2 is alkyl alkoxy, alkoxyalkyl, alkenyl, alkenyloxy, alkenyloxyalkyl or alkyloxyalkenyl which has 1 to 10 carbon atoms, alkynyl, fluoroalkyl, fluoroalkyloxy, halogen, cyano and cyanoalkynyl. Among them, the particularly preferred groups include methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, methoxymethyl, ethoxymethyl, propoxymethyl, butoxymethyl, methoxyethyl, ethoxyethyl, propoxyethyl, methoxypropyl, ethoxypropyl, propoxypropyl, vinyl, 1-propenyl, 2-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-propenyloxy, 2-butenyloxy, 2-pentenyloxy, 4-pentenyloxy, 2-propenyloxymethyl, 2-propenyloxyethyl, 3-butenyloxymethyl, 3-methoxy-1-propenyl, 3-methoxy-1-pentenyl, 3-methoxy-2-pentenyl, ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, 2-pentynyl, 3-pentynyl, 4-pentynyl, —F, —Cl, —CN, —C≡C—CN, —CF 3 , —OCF 3 and —OCF 2 H.

The compound in which one or both of Y 1 and Y 2 are optically active groups is particularly useful as a chiral dopant. Addition thereof to the composition makes it possible to prevent reverse twist domain from being produced.

The compound (1) can suitably be used as a component for a composition used for various displays including a TN type, an STN type, a TFT type and so on. Among the compounds (1), the bicyclic and tricyclic compounds show a low viscosity, and the tricyclic and tetracyclic compounds show a high isotropic phase transition temperature.

The compound (1) having two or more cyclohexane rings in a molecule shows a high isotropic phase transition temperature, a small Δn and a low viscosity. Further, the compound (1) having a dioxane ring or a pyrimidine ring shows a relatively large Δ∈.

The compound (1) having at least one benzene ring in a molecule shows a relatively large Δn and a high liquid crystal orientational parameter and therefore is excellent. In particular, the compound (1) having two or more benzene rings in a molecule shows a particularly large Δn, a broad liquid crystal temperature range and a chemically high stability.

The compound (1) which is substituted with groups such as —F, —CN, —CF 3 , —OCF 3 and —OCF 2 H so that the dipole moment grows larger in a molecular long axis direction has a large positive Δ∈, a high isotropic phase transition temperature and a relatively low viscosity. The compound in which these groups are substituted on a benzene ring shows an excellent stability and a particularly large positive Δ∈. Further, the compound in which plural groups are substituted on a benzene ring shows a larger Δ∈.

The compound (1) which is substituted with —F so that the dipole moment grows larger in a molecular short axis direction has a large negative Δ∈, a high isotropic phase transition temperature and a relatively low viscosity. The compound in which —F is substituted on a lateral side of a benzene ring shows an excellent chemical stability and a large negative Δ∈. The compound having two or more —F shows a particularly large negative Δ∈.

The compound (1) having double bonds on Z 1 , Z 2 or Z 3 shows a broad liquid crystal temperature range and a large elastic constant ratio, and therefore it is suitably used as a composition for STN. The compound (1) having a triple bond shows a large Δ∈.

These matters make it possible to provide a novel liquid crystalline compound having desired physical properties by suitably selecting rings, side chains and/or bonding groups. Further, the compound (1) in which atoms constituting it are substituted with the isotopes shows the same characteristics and therefore can be used as well.

The composition of the present invention shall be explained below. This composition preferably contains 0.1 to 99.9% by weight of at least one compound (1) (hereinafter referred to as a first component) in order to allow excellent characteristics to be revealed. The amount is more preferably 1 to 80% by weight and further preferably 1 to 60% by weight.

The composition may comprise only the first component. It is allowed to be added as the second component, which is at least one compound (hereinafter referred to as a second A component) selected from the compounds (2), (3) and (4) described above or at least one compound (hereinafter referred to as a second B component) selected from the compounds (5) and (6) to the first component. At least one compound selected from the compounds (10), (11) and (12) can also be added as the third component for the purpose of controlling a threshold voltage, a liquid crystal phase temperature range, a birefringence, a dielectric anisotropy and a viscosity.

The compounds which are the respective components for the composition may be the analogues thereof comprising the isotopes of the respective elements since there is no large difference between the physical characteristics thereof.

In the second A component described above, the suitable examples of the compound (2) are (2-1) to (2-9); the suitable examples of the compound (3) are (3-1) to (3-97); and the suitable examples of the compound (4) are (4-1) to (4-33).

In the formulas, R 1 and X 1 mean the same as those described in the item [9] described above.

These compounds (2), (3) and (4) have a positive dielectric anisotropy and are very excellent in heat stability and chemical stability, so that they are used primarily for a composition for TFT. When preparing a composition for TFT, an amount of the above compound falls in a range of 0.1 to 99.9% by weight, preferably 10 to 97% by weight and more preferably 40 to 95% by weight based on the whole weight of a composition. The compounds (10) to (12) may further be added to the composition for the purpose of controlling a viscosity.

In the second B component described above, the suitable examples of the compounds (5) to (6) are (5-1) to (5-58) and (6-1) to (6-3) respectively.

In the formulas, R 2 , R 3 and X 2 mean the same as those described in the item [10] described above.

These compounds (5) and (6) have a very large positive dielectric anisotropy, so that they are used mainly for the compositions for STN or TN. These compounds are used particularly for the purpose of reducing a threshold voltage. They are used as well for the purposes of controlling a viscosity and a birefringence and expanding a liquid crystal phase temperature range and also for the purpose of improving steepness. When preparing a composition for STN or TN, a use amount of the compounds (5) and (6) falls in a range of 0.1 to 99.9% by weight, preferably 10 to 97% by weight and more preferably 40 to 95% by weight. A third component described later can further be added for the purpose of controlling a threshold voltage, a liquid crystal phase temperature range, a birefringence, a dielectric anisotropy and a viscosity.

When preparing a composition having a negative dielectric anisotropy which is suited for a vertical aligning mode (VA mode), preferably mixed is at least one compound (hereinafter referred to as a second C component) selected from the compounds (7) to (9). The suitable examples of the compounds (7) to (9) in the second C component are (7-1) to (7-3), (8-1) to (8-5) and (9-1) to (9-3) respectively.

In the formulas, R 4 and R 5 mean the same as those described in the item [11] described above).

The compounds (7) to (9) have a negative dielectric anisotropy. The compound (7) having two six-membered rings is used mainly for the purpose of controlling a threshold voltage, a viscosity or a dielectric anisotropy. The compound (8) is used for the purpose of elevating the clearing point to expand a nematic range, reducing a threshold voltage and increasing a dielectric anisotropy.

The compounds (7) to (9) are used for a composition for a VA mode having a negative value of the dielectric anisotropy. If an amount thereof is increased, a composition is reduced in a threshold voltage but increased in a viscosity. Accordingly, as small amount as possible is preferred as long as a required value of the threshold voltage is satisfied. An amount of the compounds (7) to (9) is preferably 40% by weight or more, more preferably 50 to 90% by weight in the case of uses for a VA mode.

The compounds (7) to (9) are mixed in a certain case with a composition having a positive dielectric anisotropy for the purpose of controlling an elastic constant and a voltage transmission curve of the composition. An amount thereof is preferably 30% by weight or less.

In the third component described above, the suitable examples of the compounds (10) to (12) are (10-1) to (10-11), (11-1) to (11-12) and (12-1) to (12-6) respectively.

In the formulas, R 6 and R 7 mean the same as those 5 described in the item [12] described above.

The compounds (10) to (12) have a small absolute value of a dielectric anisotropy and are close to neutrality. The compound (10) is used mainly for the purpose of controlling a viscosity or a dielectric anisotropy. Further, the compounds (11) and (12) are used for the purpose of elevating a clearing point to broaden a nematic range or controlling a dielectric anisotropy. If a use amount of the compounds (10) to (12) is increased, a composition is elevated in a threshold voltage and reduced in a viscosity. Accordingly, they are used preferably in a large amount as long as a required value of the threshold voltage is satisfied. An amount of the compounds (10) to (12) is 40% by weight or less, preferably 35% by weight or less in the case of uses for TFT. An amount in uses for STN or TN is 70% by weight or less, preferably 60% by weight or less.

A composition of the present invention contains 0.1 to 99% by weight of at least one of the compounds (1), whereby the excellent characteristics are revealed.

A composition is prepared by a publicly known method, for example, by dissolving various components by heating. Suitable additives are added if necessary, whereby the composition is optimized according to intended uses. Such additives are well known by a person averagely skilled in the art and described in detail in literatures. A chiral dopant induces a spiral structure of liquid crystal to provide distortion to thereby prevent inverse distortion. The following optically active compounds can be given as the examples of the chiral dopant.

Usually, in the composition of the present invention, these optically active compounds are added to control a pitch in distortion. The pitch in distortion falls preferably in a range of 40 to 200 μm in the case of the compositions for TFT and TN. In the case of the composition for STN, it falls preferably in a range of 6 to 20 μm. Further, in the case of the composition for a bistable TN mode, it falls preferably in a range of 1.5 to 4 μm. Two or more kinds of the optically active compounds may be added for the purpose of controlling a temperature dependency of the pitch.

The composition of the present invention can also be used as a liquid crystal composition for a G-H mode by adding dichroic dyes such as merocyanines, styryls, azo, azomethines, azoxy, quinophthalones, anthraquinones, tetrazines, or the like. The composition according to the present invention can also be used as a composition for NCAP prepared by micro-capsulizing nematic liquid crystal and Polymer Dispersed Liquid Crystal Display (PDLCD) prepared by forming a three-dimensional network polymer in the liquid crystal, for example, Polymer Network Liquid Crystal Display (PNLCD). It can also be used as a composition for Electrically Controlled Birefringence (ECB) mode and a DS mode

The compound (1) is produced by a conventional organic synthetic method. Suitably selected and combined are publicly known and conventional synthetic methods described in publications and magazines such as, for example, Organic Synthesis (John Wiley & Sons), Organic Reactions (John Wiley & Sons), Comprehensive Organic Synthesis (Pergamon Press) and Shin-Zikken Kagaku Koza (Maruzen).

Suitably selected and combined for introducing an Si part are publicly known and conventional synthetic methods described in publications and magazines such as, for example, Silicon in Organic Synthesis (Butterworths), Silicon Reagents for Organic Synthesis (Springer-Verlag) and Silicon Reagents in Organic Synthesis (Academic Press).

Routes shown below can be given as the specific examples.

Y 1 , Y 2 , A 1 , A 2 , A 3 , A 4 , Z 1 , Z 2 , Z 3 , p and q each described above are the same as those described in the item [1] described above. Q 1 is halogen, and Q 2 is halogen or alkoxy. Mt is lithium, potassium, halogenated magnesium or halogenated zinc.

First, the compound (11) is reacted with metal such as magnesium and various organic metal reagents such as alkyllithium compounds, alkylzinc compounds, alkylpotassium compounds and alkylcadmium compounds, whereby an organic metal reagent (12) is prepared. This is reacted with tretrasubstituted silane such as tetraalkoxysilane and tetrahalosilane to obtain a silicon compound (13). The compound (13) is subjected to reducing treatment with a suitable reducing agent such as lithium aluminum hydride, diisobutylaluminum hydride, sodium borohydride, sodium cyanoborohydride and diborane-THF, whereby it is derived into a compound (1). When other substituents in the compound (13) are reduced with these reducing agents, suitable additives are used or the reaction conditions are controlled to selectively reduce only SiQ 2 3 .

EXAMPLES

The present invention shall be explained below in more details with reference to examples, but the present invention shall not be restricted by these examples. The structures of the compounds were confirmed by means of a nuclear magnetic resonance spectrum and a mass spectrum (hereinafter abbreviated as MS). M+ in MS represents a molecular ion peak. C shows a crystal phase; S shows a smectic phase; N shows a nematic phase; and Iso shows an isotropic liquid phase. A unit of a phase transition temperature is ° C. in all examples.

Example 1

Production of trans-1-pentyl-4-(trans-4-silylmethylcyclohexyl)cyclohexane (compound (No. 742) in which in Formula (1), Y 1 is methylene; Y 2 is pentyl; A 1 and A 2 are trans-1,4-cyclohexylene; Z 1 is a single bond; p and q are 0)

First Step:

A Grignard reagent was prepared from 100 ml of THF, magnesium (120 mmole) and trans-1-pentyl-4-(trans-4-chloromethylcyclohexyl)cyclohexane (100 mmole) under nitrogen atmosphere. A THF 100 ml solution of tetramethoxysilane (150 mmole) was heated to 65° C., and the Grignard reagent was added dropwise thereto. Further, the solution was stirred at the same temperature for 2 hours, and after left standing for cooling, the reaction mixture was filtered. The solvent was distilled off, and then trans-1-pentyl-4-(trans-4-trimethoxysilylmethyl-cyclohexyl)cyclohexane (65 mmole) was obtained by distillation under reduced pressure.

Second Step:

Lithium aluminum hydride (59 mmole) was suspended in 50 ml of THF on an ice bath under nitrogen atmosphere, and a THF 50 ml solution of trans-1-pentyl-4-(trans-4-trimethoxymethylsilylcyclohexyl)cyclohexane (65 mmole), which was obtained in the reaction of the first step, was added dropwise thereto. After stirring for one hour, water was added to the reaction mixture, and insoluble matters were filtered off. The separated organic layer was dried on anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with a silica gel column chromatography (eluent: heptane), and then it was recrystallized from heptane to obtain trans-1-pentyl-4-(trans-4-silylmethylcyclohexyl)cyclohexane (30 mmole).

Phase transition temperature: Cr −0.9 S 74.2 Iso MS: m/e=280 (M+).

Example 2

Production of 1-trifluoromethoxy-4-(trans-4-(trans-4-silylethylcyclohexyl)cyclohexyl)benzene (compound (No. 34) in which in Formula (1), Y 1 is ethylene;. Y 2 is —OCF 3 ; A 1 and A 2 are trans-1,4-cyclohexylene; A 3 is 1,4-phenylene; Z 1 and Z 2 are single bonds; p is 1, and q is 0)

First Step:

A Grignard reagent was prepared from 100 ml of THF, magnesium (120 mmole) and 1-trifluoromethoxy-4-(trans-4-(trans-4-chloroethylcyclohexyl)cyclohexyl)benzene (100 mmole) under nitrogen atmosphere. A THF 100 ml solution of tetramethoxysilane (150 mmole) was heated to 65° C., and the Grignard reagent was added dropwise thereto. The solution was stirred at the same temperature for 2 hours, and after left standing for cooling, the reaction mixture was filtered. The solvent was distilled off, and then 1-trifluoromethoxy-4-(trans-4-(trans-4-trimethoxysilylethylcyclohexyl)cyclohexyl)benzene (57 mmole) was obtained by distillation under reduced pressure.

Second Step:

Lithium aluminum hydride (51 mmole) was suspended in 50 ml of THF on an ice bath under nitrogen atmosphere, and a THF 50 ml solution of 1-trifluoromethoxy-4-(trans-4-(trans-4-trimethoxysilylethylcyclohexyl)cyclohexyl)-benzene (57 mmole), which was obtained in the reaction of the first step, was added dropwise thereto. After adding dropwise, the solution was stirred for one hour, and water was added to the reaction mixture, followed by filtering off insoluble matters. The separated organic layer was dried on anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with a silica gel column chromatography (eluent: mixed solvent of heptane/toluene), and it was recrystallized from heptane to obtain 1-trifluoromethoxy-4-(trans-4-(trans-4-silylethylcyclohexyl)cyclohexyl)benzene (26 mmole).

MS: m/e=384 (M+).

Example 3

Production of 1-ethoxy-2,3-difluoro-4-(trans-4-silylbutylcyclohexyl)benzene (compound (No. 676) in which in Formula (1), Y 1 is butylene; Y 2 is ethoxy; A 1 is trans-1,4-cyclohexylene, and A 2 is 2,3-difluoro-1,4-phenylene; Z 1 is a single bond; p and q are 0)

First Step:

A Grignard reagent was prepared from 100 ml of THF, magnesium (120 mmole) and 1-ethoxy-2,3-difluoro-4-(trans-4-chlorobutylcyclohexyl)benzene (100 mmole) under nitrogen atmosphere. A THF 100 ml solution of tetramethoxysilane (150 mmole) was heated to 65° C., and the Grignard reagent was added dropwise thereto. Further, the solution was stirred at the same temperature for 2 hours, and after left standing for cooling, the reaction mixture was filtered. The solvent was distilled off, and then 1-ethoxy-2,3-difluoro-4-(trans-4-trimethoxysilyl-butylcyclohexyl)benzene (58 mmole) was obtained by distillation under reduced pressure.

Second Step:

Lithium aluminum hydride (52 mmole) was suspended in 50 ml of THF on an ice bath under nitrogen atmosphere, and a THF 50 ml solution of 1-ethoxy-2,3-difluoro-4-(trans-4-trimethoxysilylbutylcyclohexyl)benzene (58 mmole), which was obtained in the reaction of the first step, was added dropwise thereto. After adding dropwise, the solution was stirred for one hour, and water was added to the reaction mixture, followed by filtering off insoluble matters. The separated organic layer was dried on anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with a silica gel column chromatography (eluent: mixed solvent of heptane/toluene), and it was recrystallized from heptane to obtain 1-ethoxy-2,3-difluoro-4-(trans-4-silylbutylcyclohexyl)benzene (25 mmole). MS: m/e=326 (M+).

Example 4

Production of 2-fluoro-1-(4-propylphenyl)-4-(4-silylethylphenyl)benzene (compound (No. 861) in which in Formula (1), Y 1 is ethylene; Y 2 is propyl; A 1 and A 3 are 1,4-phenylene; A 2 is 2-fluoro-1,4-phenylene; Z 1 and Z 2 are single bonds; p is 1, and q is 0)

First Step:

A Grignard reagent was prepared from 100 ml of THF, magnesium (120 mmole) and 2-fluoro-1-(4-propylphenyl)-4-(4-chloroethylphenyl)benzene (100 mmole) under nitrogen atmosphere. A THF 100 ml solution of tetramethoxysilane (150 mmole) was heated to 65° C., and the Grignard reagent was added dropwise thereto. Further, the solution was stirred at the same temperature for 2 hours, and after left standing for cooling, the reaction mixture was filtered. The solvent was distilled off, and then 2-fluoro-1-(4-propylphenyl)-4-(4-trimethoxysilyl-ethylphenyl)benzene (59 mmole) was obtained by distillation under reduced pressure.

Second Step:

Lithium aluminum hydride (53 mmole) was suspended in 50 ml of THF on an ice bath under nitrogen atmosphere, and a THF 50 ml solution of 2-fluoro-(4-propylphenyl)-4-1-(4-trimethoxysilylethylphenyl)benzene (59 mmole), which was obtained in the reaction of the first step, was added dropwise thereto. After adding dropwise, the solution was stirred for one hour, and water was added to the reaction mixture, followed by filtering off insoluble matters. The separated organic layer was dried on anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with a silica gel column chromatography (eluent: heptane), and it was recrystallized from heptane to obtain 2-fluoro-1-(4-propylphenyl)-4-(4-silylethylphenyl)benzene (22 mmole). MS: m/e=348 (M+).

The following compounds were produced according to the methods of Examples 1 to 4.

	Y 1	A 1	Z 1	A 2
1			—
2	—CH 2 O—		—
3			—
4	—C 4 H 8 —		—
5	—C 3 H 6 O—		—
6			—
7			—
8			—
9			—
10			—
11			—
12			—
13			—
14			—
15	—CH 2 O—		—
16
17	—CH 2 O—
18	—C 3 H 6 O—
19
20
21
22
23
24
25
26	—C 2 H 4 O—
27
28
29	—CH 2 —
30
31			—
32	—CH 2 O—		—
33			—
34			—
35			—
36			—
37	—C 2 H 4 O—		—
38			—
39	—C 3 H 6 —		—
40			—
41	—C 2 H 4 —		—
42			—
43			—
44	—C 3 H 6 —		—
45			—
46			—
47			—
48	—CH 2 O—		—
49			—
50			—
51			—
52			—
53			—
54	—C 3 H 6 O—		—
55			—
56			—
57			—
58			—
59	—CH 2 —		—
60	—C 2 H 4 O—		—
61
62
63
64
65
66			—
67			—
68			—
69	—C 3 H 6 O—		—
70			—
71			—
72			—
73			—
74	—CH 2 —		—
75	—C 2 H 4 O—		—
76
77
78
79	—CH 2 O—
80
81
82	—C 3 H 6 O—
83
84
85
86
87
88
89	—CH 2 —
90	—C 2 H 4 O—
91
92
93	—CH 2 O—
94
95
96
97	—C 3 H 8 O—
98
99
100
101
102
103
104	—CH 2 —
105
106			—
107			—
108			—
109			—
110			—
111			—
112			—
113			—
114	—CH 2 O—		—
115			—
116	—C 2 H 4 O—		—
117	—CH 2 —		—
118			—
119			—
120	—C 3 H 6 O—		—
121
122
123
124
125
126
127
128
129	—CH 2 O—
130
131	—C 2 H 4 O—
132	—C 2 H 4 —
133
134
135	—C 3 H 6 O—
136
137
138
139
140
141			—
142			—
143			—
144	—CH 2 O—		—
145			—
146	—C 2 H 4 O—
147	—C 4 H 8 —
148
149
150
151			—
152			—
153	—CH 2 O—		—
154			—
155			—
156			—
157			—
158			—
159	—CH 2 O—		—
160			—
161			—
162			—
163			—
164	—CH 2 —		—
165	—C 2 H 4 O—		—
166			—
167	—CH 2 O—		—
168			—
169			—
170			—
171			—
172			—
173			—
174			—
175	—C 3 H 6 O—		—
176			—
177			—
178			—
179	—C 2 H 4 O—		—
180	—C 4 H 8 —		—
181			—
182			—
183			—
184			—
185			—
186			—
187			—
188			—
189	—C 3 H 6 —		—
190	—CH 2 O—		—
191			—
192	—CH 2 —		—
193			—
194			—
195			—
196
197
198
199
200
201
202	—CH 2 —
203
204
205	—CH 2 O—
206
207	—CH 2 —
208
209
210
211			—
212			—
213	—CH 2 O—		—
214			—
215			—
216			—
217			—
218			—
219			—
220	—CH 2 —		—
221			—
222			—
223			—
224	—C 3 H 6 —		—
225			—
226			—
227			—
228			—
229			—
230			—
231			—
232			—
233			—
234			—
235	—CH 2 O—		—
236			—
237			—
238			—
239			—
240	—C 4 H 8 —		—
241			—
242			—
243			—
244			—
245			—
246			—
247			—
248			—
249			—
250	—C 3 H 6 O—
251
252
253
254
255
256			—
257			—
258			—
259			—
260			—
261	—C 3 H 6 O—		—
262			—
263			—
264	—C 2 H 4 —		—
265			—
266			—
267			—
268			—
269	—CH 2 —		—
270			—
271			—
272			—
273			—
274			—
275			—
276	—C 3 H 6 O—		—
277			—
278	—C 2 H 4 —		—
279			—
280			—
281			—
282			—
283			—
284	—CH 2 O—		—
285			—
286			—
287			—
288			—
289			—
290			—
291			—
292			—
293	—C 2 H 4 —		—
294			—
295			—
296			—
297	—C 3 H 6 O—		—
298			—
299	—CH 2 O—		—
300			—
301			—
302			—
303			—
304			—
305			—
306	—C 3 H 6 O—		—
307			—
308			—
309	—C 2 H 4 —		—
310			—
311			—
312			—
313	—C 2 H 4 —		—
314			—
315	—CH 2 —		—
316	—C 2 H 4 —		—
317	—CH 2 O—		—
318			—
319	—C 4 H 8 —		—
320			—
321			—
322			—
323			—
324	—C 2 H 4 —		—
325			—
326	—C 2 H 4 O—		—
327			—
328
329	—CH 2 —
330
331	—C 4 H 8 —
332	—C 2 H 4 —
333	—C 3 H 6 O—
334
335
336	—C 2 H 4 —
337			—
338			—
339			—
340			—
341	—C 4 H 8 —		—
342			—
343			—
344	—CH 2 —		—
345			—
346	—C 2 H 4 —		—
347	—C 3 H 6 —		—
348			—
349			—
350			—
351			—
352			—
353			—
354	—CH 2 O—		—
355			—
356	—C 2 H 4 O—		—
357			—
358			—
359	—CH 2 —		—
360			—
361	—C 2 H 4 —		—
362	—C 3 H 6 —		—
363			—
364			—
365	—CH 2 O—		—
366			—
367			—
368	—C 2 H 4 O—		—
369			—
370			—
371			—
372			—
373			—
374	—CH 2 —		—
375			—
376	—C 2 H 4 —		—
377	—C 3 H 6 —		—
378	—CH 2 O—		—
379			—
380			—
381			—
382			—
383	—C 5 H 10 O—		—
384			—
385			—
386			—
387			—
388			—
389	—CH 2 —		—
390			—
391			—
392	—C 3 H 6 —		—
393	—C 2 H 4 —		—
394			—
395	—C 2 H 4 —		—
396	—CH 2 O—		—
397	—C 2 H 4 O—		—
398			—
399			—
400			—
401			—
402			—
403			—
404	—CH 2 —		—
405			—
406	—C 2 H 4 —		—
407	—CH 2 O—		—
408			—
409	—C 2 H 4 —		—
410	—C 2 H 4 —		—
411	—C 3 H 6 O—		—
412			—
413			—
414			—
415			—
416			—
417			—
418			—
419	—CH 2 —		—
420			—
421			—
422			—
423	—CH 2 O—		—
424			—
425			—
426	—C 2 H 4 O—		—
427			—
428			—
429			—
430			—
431	—CH 2 —		—
432			—
433			—
434	—C 3 H 6 —		—
435	—C 2 H 4 —		—
436			—
437			—
438			—
439	—C 2 H 4 O—		—
440			—
441	—CH 2 —		—
442			—
443			—
444			—
445			—
446			—
447			—
448	—CH 2 O—		—
449	—C 3 H 6 —		—
450	—C 2 H 4 —		—
451	—C 4 H 8 —		—
452	—C 3 H 6 O—		—
453			—
454	—C 4 H 8 —		—
455	—C 5 H 10 O—		—
456			—
457	—C 4 H 8 —		—
458			—
459			—
460			—
461	—C 2 H 4 O—		—
462
463	—CH 2 O—
464
465
466	—C 4 H 8 —		—
467	—C 3 H 6 O—		—
468			—
469	—C 4 H 8 —		—
470			—
471	—C 2 H 4 O—		—
472			—
473			—
474			—
475	—CH 2 O—		—
476			—
477			—
478	—C 4 H 8 —		—
479	—C 5 H 10 O—		—
480			—
481	—C 2 H 4 —
482	—C 3 H 6 O—
483
484	—C 2 H 4 —
485
486	—C 2 H 4 O—
487
488
489	—C 3 H 6 —
490	—C 3 H 6 O—
491
492
493	—CH 2 O—
494
495
496	—C 2 H 4 —
497	—C 3 H 6 O—
498
499
500	—C 2 H 4 O—
501
502
503	—C 3 H 6 O—
504	—C 3 H 6 —
505
506
507
508	—CH 2 O—
509
510
511	—C 2 H 4 —
512	—C 3 H 6 O—
513
514	—C 2 H 4 O—
515
516
517
518	—C 3 H 6 O—
519	—C 3 H 6 —
520
521
522	—CH 2 O—
523
524
525	—C 3 H 6 O—
526			—
527	—CH 2 O—		—
528			—
529			—
530	—C 2 H 4 O—		—
531			—
532			—
533	—C 3 H 6 O—		—
534			—
535			—
536	—C 2 H 4 O—		—
537	—CH 2 —		—
538			—
539	—CH 2 O—		—
540			—
541	—C 2 H 4 —		—
542	—C 3 H 6 O—		—
543			—
544	—C 4 H 8 —		—
545	—C 2 H 4 O—		—
546	—C 3 H 6 —		—
547			—
548	—C 3 H 6 O—		—
549			—
550			—
551	—C 2 H 4 O—		—
552	—CH 2 —		—
553			—
554	—CH 2 O—		—
555			—
556	—C 2 H 4 —		—
557	—CH 2 O—		—
558			—
559	—C 7 H 14 —
560	—C 3 H 6 O—
561	—C 3 H 6 —
562
563	—C 2 H 4 O—
564
565
566	—C 2 H 4 O—
567	—C 2 H 4 —
568
569
570	—CH 2 O—
571	—C 2 H 4 —
572	—CH 2 O—
573
574	—C 2 H 4 —
575	—C 3 H 6 O—
576	—C 3 H 6 —
577			—
578	—C 3 H 6 O—		—
579			—
580			—
581	—C 2 H 4 O—		—
582	—C 2 H 4 —		—
583			—
584			—
585	—CH 2 O—		—
586	—C 2 H 4 —		—
587	—C 2 H 4 O—		—
588			—
589	—C 4 H 8 —		—
590	—C 3 H 6 O—		—
591	—C 2 H 4 —		—
592			—
593	—C 3 H 6 O—		—
594			—
595			—
596			—
597	—CH 2 O—		—
598			—
599	—C 2 H 4 O—		—
600	—C 3 H 6 —		—
601	—C 2 H 4 —		—
602	—C 3 H 6 O—		—
603			—
604	—C 4 H 8 —		—
605	—C 2 H 4 O—		—
606	—C 2 H 4 —		—
607	—C 8 H 16 —		—
608	—C 3 H 6 O—		—
609	—CH 2 O—		—
610			—
611			—
612	—C 2 H 4 —		—
613			—
614	—C 2 H 4 O—		—
615	—C 3 H 6 —		—
616	—C 4 H 8 —		—
617	—C 4 H 8 O—		—
618			—
619	—C 2 H 4 —		—
620	—C 2 H 4 O—		—
621	—C 4 H 8 —		—
622			—
623	—C 2 H 4 O—		—
624	—CH 2 O—		—
625			—
626	—CH 2 O—		—
627	—C 2 H 4 —		—
628			—
629	—C 2 H 4 O—		—
630	—C 3 H 6 —		—
631	—C 4 H 8 —
632
633	—C 4 H 8 —
634	—CH 2 O—
635	—C 2 H 4 —
636	—C 4 H 8 —
637	—C 4 H 8 —
638	—C 2 H 4 O—
639
640
641	—C 2 H 4 —
642	—C 2 H 4 —
643
644	—C 4 H 8 —
645
646	—C 4 H 8 —
647
648	—C 3 H 6 O—
649	—CH 2 O—		—
650	—C 2 H 4 —		—
651	—C 4 H 8 —		—
652	—C 2 H 4 —		—
653	—C 2 H 4 O—		—
654			—
655			—
656	—C 4 H 8 O—		—
657	—C 2 H 4 —		—
658			—
659	—CH 2 O—		—
660	—C 2 H 4 —		—
661	—C 4 H 8 —		—
662			—
663	—C 2 H 4 —		—
664	—CH 2 O—		—
665	—C 4 H 8 —		—
666	—C 2 H 4 —		—
667	—C 2 H 4 —		—
668	—C 6 H 12 O—		—
669			—
670			—
671	—C 5 H 10 —		—
672			—
673			—
674	—C 4 H 8 O—		—
675			—
676			—
677	—C 3 H 6 —		—
678			—
679	—C 4 H 8 O—		—
680			—
681	—C 4 H 8 —		—
682	—C 3 H 6 O—		—
683	—C 7 H 14 —		—
684			—
685			—
686
687
688	—CH 2 O—
689
690
691			—
692	—C 2 H 4 —		—
693	—C 4 H 8 —		—
694			—
695			—
696	—C 4 H 8 —		—
697	—C 3 H 6 O—		—
698	—C 7 H 14 —		—
699	—C 2 H 4 —		—
700			—
701			—
702			—
703	—CH 2 O—		—
704			—
705			—
706			—
707	—C 2 H 4 —		—
708			—
709	—C 3 H 6 O—		—
710			—
711	—C 2 H 4 —		—
712	—CH 2 O—		—
713	—C 4 H 8 —		—
714			—
715			—
716			—
717			—
718	—C 2 H 4 —		—
719			—
720			—
721			—
722	—C 4 H 8 —		—
723			—
724	—C 3 H 6 O—		—
725			—
726	—C 2 H 4 —		—
727	—CH 2 O—		—
728	—C 4 H 8 —		—
729			—
730			—
731			—
732			—
733	—C 7 H 14 —		—
734	—C 3 H 6 O—		—
735			—
736			—
737	—CH 2 O—		—
738			—
739			—
740			—
741	—C 7 H 14 O—		—
742	—CH 2 —		—
743			—
744	—C 2 H 4 O—		—
745			—
746
747
748
749
750
751	—C 3 H 6 —
752	—CH 2 O—
753
754
755
756			—
757	—C 2 H 4 O—		—
758			—
759			—
760			—
761			—
762	—C 6 H 12 —		—
763			—
764			—
765			—
766			—
767			—
768			—
769
770	—C 2 H 4 O—
771
772
773
774
775
776	—C 4 H 8 O—
777
778	—CH 2 —
779
780
781
782	—C 2 H 4 O—
783
784
785
786
787	—CH 2 —
788	—C 2 H 4 O—
789
790
791	—C 4 H 8 —		—
792			—
793	—C 4 H 8 O—		—
794			—
795			—
796
797	—C 2 H 4 O—
798
799
800
801
802	—CH 2 O—
803
804
805
806	—C 3 H 6 —		—≡—
807			—≡—
808	—C 4 H 8 O—		—≡—
809			—≡—
810			—≡—
811			—
812	—CH 2 O—		—
813	—C 2 H 4 —		—
814			—
815			—
816			—
817	—C 4 H 8 —		—
818	—C 2 H 4 O—		—
819			—
820			—
821	—C 2 H 4 —
822
823	—C 4 H 8 O—
824
825
826			—
827	—CH 2 O—		—
828	—C 2 H 4 —		—
829			—
830			—
831	—C 2 H 4 —		—
832			—
833	—C 3 H 8 O—		—
834			—
835			—
836
837	—C 4 H 8 —
838	—C 2 H 4 O—
839
840
841	—CH 2 —		—
842	—C 2 H 4 O—		—
843	—C 2 H 4 —		—
844			—
845			—
846			—
847	—C 4 H 8 —		—
848	—C 2 H 4 O—		—
849			—
850			—
851	—C 2 H 4 —		—
852			—
853	—C 4 H 8 O—		—
854			—
855			—
856
857	—CH 2 O—
858	—C 2 H 4 —
859
860
861	—C 2 H 4 —		—
862			—
863	—C 4 H 8 O—		—
864			—
865			—
866			—
867	—C 2 H 4 —		—
868	—C 2 H 4 O—		—
869			—
870			—
871			—
872	—CH 2 O—		—
873			—
874	—C 4 H 8 —		—
875	—C 3 H 8 —		—
876			—
877			—
878	—C 2 H 4 —		—
879	—C 4 H 8 —		—
880	—CH 2 O—		—
881			—
882	—C 4 H 8 —		—
883	—C 3 H 6 —		—
884			—
885			—
886	—C 2 H 4 —		—
887	—CH 2 —		—
888			—
889			—
890	—C 2 H 4 —		—
891	—CH 2 —		—
892	—CH 2 O—		—
893			—
894			—
895	—CH 2 O—		—
896			—
897	—C 3 H 6 —		—
898	—C 4 H 8 —		—
899			—
900			—
901			—
902	—CH 2 O—		—
903	—C 2 H 4 —		—
904			—
905	—C 3 H 6 O—		—
906	—CH 2 —		—
907			—
908	—C 2 H 4 O—		—
909	—C 2 H 4 —		—
910			—
911	—C 3 H 6 O—		—
912	—C 6 H 12 —		—
913			—
914	—C 4 H 8 O—		—
915			—
916			—
917	—C 2 H 4 O—		—
918	—C 2 H 4 —		—
919			—
920			—
921			—
922			—
923			—
924			—
925			—
926			—
927			—
928			—
929			—
930	—C 4 H 8 O—		—
931	—C 2 H 4 —		—
932	—CH 2 —		—
933			—
934			—
935	—C 3 H 6 —
936	—CH 2 —
937	—CH 2 O—
938
939			—
940	—C 3 H 6 O—		—
941			—
942	—C 2 H 4 —
943	—C 4 H 8 —
944
945
946	—C 4 H 8 —
947	—CH 2 —
948
949
950	—C 3 H 6 —
951	—CH 2 —
952	—C 2 H 4 O—
953
954			—
955	—C 2 H 4 O—		—
956			—
957
958	—C 4 H 8 —
959	—C 2 H 4 —
960
961	—C 4 H 8 —		—
962	—C 5 H 10 —
963			—
964
965	—CH 2 —		—
966	—C 3 H 6 —
967	—C 2 H 4 O—		—
968	—C 4 H 8 —
969	—C 3 H 6 O—
970			—≡—
971			—
972	—C 2 H 4 —		—≡—
973	—C 4 H 8 —
974	—C 2 H 4 —		—≡—
975
976	—CH 2 —		—
977	—C 3 H 6 —		—
978	—C 2 H 4 —		—
979	—CH 2 O—		—
980	—C 2 H 4 —		—
981	—C 3 H 6 —		—
982	—C 2 H 4 —		—
983	—C 3 H 6 —		—
984	—C 2 H 4 —		—
985	—C 3 H 6 —		—
986	—C 2 H 4 —		—
987	—C 3 H 6 —		—
988	—C 2 H 4 —		—
989	—C 3 H 6 —		—
990	—C 2 H 4 —		—
991	—C 2 H 4 —		—

	Z 2	A 3	Z 3	A 4	Y 2
1					—F
2					—Cl
3					—OCF 2 H
4					—OCF 3
5					—F
6					—OCF 2 H
7					—CF 3
8					—F
9					—OCF 3
10					—F
11					—CF 3
12					—OCF 3
13					—F
14					—OCF 2 H
15					—F
16					—OCF 3
17					—OCF 2 CF 3
18					—CF 3
19					—OCF 3
20					—F
21					—OCF 2 H
22					—CF 3
23					—F
24					—OCF 3
25					—F
26					—CF 2 H
27					—OCF 3
28					—F
29					—OCF 2 H
30					—F
31	—				—F
32	—				—Cl
33	—				—OCF 3
34	—				—OCF 3
35	—				—F
36	—				—OCF 3
37	—				—CF 3
38	—				—OCF 3
39	—				—OCF 3
40	—				—F
41	—				—OCF 2 H
42	—				—OCF 3
43	—				—F
44	—				—OCF 2 H
45	—				—OCF 2 H
46					—OCF 2 H
47					—F
48					—CF 3
49					—OCF 3
50					—F
51					—OCF 3
52					—CF 2 H
53					—F
54					—OCF 3
55					—F
56					—OCF 3
57					—OCF 3
58					—F
59					—OCF 2 H
60					—F
61					—OCF 3
62					—F
63					—OCF 3
64					—F
65					—F
66					—OCF 3
67					—Cl
68					—OCF 3
69					—F
70					—F
71					—F
72					—OCF 3
73					—F
74					—OCF 2 H
75					—F
76	—				—Cl
77	—				—OCF 3
78	—				—CF 2 H
79	—				—OCF 3
80	—				—F
81	—				—OCF 3
82	—				—OCF 2 H
83	—				—F
84	—				—OCF 3
85	—				—F
86	—				—CF 3
87	—				—OCF 3
88	—				—F
89	—				—OCF 2 H
90	—				—F
91	—				—F
92	—				—OCF 3
93	—				—CF 2 H
94	—				—OCF 3
95	—				—F
96	—				—OCF 2 H
97	—				—OCF 2 H
98	—				—F
99	—				—OCF 3
100	—				—F
101	—				—OCF 2 H
102	—				—OCF 3
103	—				—F
104	—				—CF 3
105	—				—F
106	—				—F
107	—				—Cl
108	—				—OCF 3
109	—				—OCF 3
110	—				—F
111	—				—OCF 3
112	—				—OCF 2 H
113	—				—F
114	—				—OCF 3
115	—				—F
116	—				—CF 3
117	—				—OCF 3
118	—				—F
119	—				—OCF 2 H
120	—				—F
121	—				—OCF 3
122	—				—Cl
123	—				—F
124	—				—OCF 3
125	—				—F
126	—				—OCF 3
127	—				—CF 2 H
128	—				—F
129	—				—OCF 3
130	—				—F
131	—				—OCF 3
132	—				—OCF 3
133	—				—F
134	—				—OCF 2 H
135	—				—F
136	—				—OCF 3
137	—				—F
138	—				—OCF 3
139	—				—OCF 3
140	—				—F
141					—OCF 3
142					—OCF 2 H
143					—OCF 3
144					—F
145					—F
146	—				—F
147	—				—OCF 3
148	—				—F
149	—				—OCF 3
150	—				—F
151					—OCF 3
152					—F
153					—CF 3
154					—OCF 3
155					—F
156					—OCF 3
157					—CF 3
158					—F
159					—OCF 3
160					—F
161					—OCF 3
162					—OCF 3
163					—F
164					—OCF 2 H
165					—F
166					—OCF 3
167					—F
168					—CF 3
169					—OCF 3
170					—F
171					—OCF 3
172					—OCF 2 H
173					—F
174					—OCF 3
175					—F
176					—OCF 3
177					—OCF 3
178					—F
179					—OCF 2 H
180					—F
181	—				—OCF 3
182	—				—F
183	—				—CF 3
184	—				—OCF 3
185	—				—F
186	—				—OCF 3
187	—				—OCF 2 H
188	—				—F
189	—				—F
190	—				—OCF 3
191	—				—F
192	—				—OCF 3
193	—				—F
194	—				—F
195	—				—F
196	—				—OCF 3
197	—				—F
198	—				—F
199	—				—OCF 3
200	—				—F
201	—				—OCF 3
202	—				—CF 2 H
203	—				—F
204	—				—OCF 3
205	—				—OCF 3
206	—				—F
207	—				—OCF 3
208	—				—F
209	—				—F
210	—				—F
211					—OCF 3
212					—F
213					—CF 3
214					—OCF 3
215					—F
216					—OCF 3
217					—OCF 2 CFHCF 3
218					—F
219					—OCF 3
220					—OCF 3
221					—F
222					—OCF 3
223					—F
224					—OCF 3
225					—F
226	—				—F
227	—				—Cl
228	—				—OCF 3
229	—				—F
230	—				—OCF 3
231	—				—OCF 2 H
232	—				—F
233	—				—F
234	—				—OCF 3
235	—				—F
236	—				—OCF 3
237	—				—OCF 3
238	—				—F
239	—				—OCF 3
240	—				—CF 3
241	—				—F
242	—				—F
243	—				—OCF 3
244	—				—F
245	—				—OCF 3
246	—				—OCF 2 H
247	—				—F
248	—				—F
249	—				—OCF 3
250	—				—F
251	—				—OCF 3
252	—				—OCF 3
253	—				—F
254	—				—OCF 3
255	—				—CF 3
256					—OCF 3
257					—F
258					—CF 3
259					—OCF 3
260					—F
261					—OCF 3
262					—CF 3
263					—F
264					—OCF 3
265					—F
266					—OCF 3
267					—OCF 3
268					—F
269					—OCF 2 H
270					—F
271					—OCF 3
272					—F
273					—CF 3
274					—OCF 3
275					—F
276					—Cl
277					—CF 3
278					—F
279					—OCF 3
280					—F
281					—OCF 3
282					—F
283					—F
284					—OCF 2 H
285					—OCF 3
286					—OCF 3
287					—F
288					—CF 3
289					—F
290					—F
291					—OCF 3
292					—CF 2 H
293					—F
294					—OCF 3
295					—Cl
296					—OCF 3
297					—F
298					—F
299					—OCF 2 H
300					—OCF 3
301					—OCF 3
302					—F
303					—CF 3
304					—OCF 3
305					—F
306					—Cl
307					—CF 2 H
308					—F
309					—OCF 3
310					—F
311					—OCF 3
312					—OCF 3
313					—F
314					—OCF 2 H
315					—F
316	—				—F
317	—				—Cl
318	—				—OCF 3
319	—				—OCF 3
320	—				—F
321	—				—OCF 3
322	—				—CF 3
323	—				—F
324	—				—OCF 3
325	—				—F
326	—				—CFH 2
327	—				—OCF 3
328	—				—F
329	—				—OCF 2 H
330	—				—OCF 3
331	—				—F
332	—				—OCF 3
333	—				—OCF 3
334	—				—OCF 3
335	—				—F
336	—				—F
337	—				—CF 3
338	—				—F
339	—				—OCF 3
340	—				—F
341	—				—OCF 3
342	—				—CF 3
343	—				—F
344	—				—OCF 2 H
345	—				—F
346	—		—		—F
347	—		—		—Cl
348	—		—		—OCF 3
349	—		—		—OCF 3
350	—		—		—F
351	—		—		—OCF 3
352	—		—		—CF 3
353	—		—		—F
354	—		—		—OCF 3
355	—		—		—F
356	—		—		—CF 3
357	—		—		—OCF 3
358	—		—		—F
359	—		—		—CF 2 H
360	—		—		—OCF 3
361	—		—		—F
362	—		—		—CFH 2
363	—		—		—OCF 3
364	—		—		—OCF 3
365	—		—		—F
366	—		—		—OCF 2 H
367	—		—		—CF 3
368	—		—		—F
369	—		—		—OCF 3
370	—		—		—F
371	—		—		—CF 3
372	—		—		—OCF 3
373	—		—		—F
374	—		—		—CF 2 H
375	—		—		—OCF 3
376	—		—		—F
377	—		—		—CFH 2
378	—		—		—OCF 3
379	—		—		—OCF 3
380	—		—		—F
381	—		—		—CF 3
382			—		—CF 3
383			—		—F
384			—		—OCF 3
385			—		—F
386			—		—CF 3
387			—		—OCF 3
388			—		—F
389			—		—CF 2 H
390			—		—OCF 3
391	—				—F
392	—				—CFH 2
393	—				—OCF 3
394	—				—F
395	—				—OCF 3
396	—				—OCF 2 H
397	—				—CF 3
398	—				—F
399	—				—OCF 3
400	—				—F
401	—				—CF 3
402	—				—OCF 3
403	—				—F
404	—				—CF 2 H
405	—				—OCF 3
406	—				—F
407	—				—CF 2 H
408	—				—OCF 3
409	—				—F
410	—				—OCF 3
411	—				—OCFH 2
412	—				—CF 3
413	—				—F
414	—				—OCF 3
415	—				—F
416	—				—CF 3
417	—				—OCF 3
418	—				—F
419	—				—CF 2 H
420	—				—OCF 3
421	—				—F
422	—				—OCF 3
423	—				—OCF 2 H
424	—				—CF 3
425	—				—F
426	—				—OCF 3
427	—				—F
428	—				—CF 3
429	—				—OCF 3
430	—				—F
431	—				—CF 2 H
432	—				—OCF 3
433	—				—F
434	—				—CFH 2
435	—				—OCF 3
436	—				—F
437	—				—OCF 3
438	—				—CF 2 H
439	—				—CF 3
440	—				—F
441	—				—OCF 3
442	—				—F
443	—				—CF 3
444	—				—OCF 3
445	—				—F
446	—				—OCF 2 H
447	—				—OCF 3
448	—				—F
449	—				—OCFH 2
450	—				—OCF 3
451					—CN
452					—CN
453					—CN
454					—CN
455					—CN
456					—CN
457					—≡—CN
458					—CN
459					—CN
460					—CN
461					—≡—CN
462					—CN
463					—CN
464					—CN
465					—CN
466					—CN
467					—CN
468					—CN
469					—≡—CN
470					—CN
471					—CN
472					—CN
473					—≡—CN
474					—CN
475					—CN
476					—CN
477					—≡—CN
478					—CN
479					—CN
480					—≡—CN
481					—CN
482					—CN
483					—CN
484					—≡—CN
485					—CN
486					—CN
487					—CN
488					—≡—CN
489					—CN
490					—CN
491					—CN
492					—CN
493					—CN
494					—CN
495					—≡—CN
496					—CN
497					—CN
498					—≡—CN
499					—CN
500					—CN
501					—CN
502					—CN
503					—CN
504					—≡—CN
505					—CN
506					—CN
507					—≡—CN
508					—CN
509					—CN
510					—CN
511					—CN
512					—CN
513					—CN
514					—CN
515					—≡—CN
516					—CN
517					—CN
518					—CN
519					—CN
520					—≡—CN
521					—CN
522					—CN
523					—≡—CN
524					—CN
525					—CN
526	—				—CN
527	—				—CN
528	—				—≡—CN
529	—				—CN
530	—				—CN
531	—				—≡—CN
532	—				—CN
533	—				—CN
534	—				—CN
535	—				—CN
536	—				—CN
537	—				—≡—CN
538	—				—CN
539	—				—CN
540	—				—≡—CN
541	—				—CN
542	—				—CN
543	—				—≡—CN
544	—				—CN
545	—				—CN
546	—				—≡—CN
547	—				—CN
548	—				—CN
549	—				—≡—CN
550					—CN
551					—CN
552					—≡—CN
553					—CN
554					—CN
555					—≡—CN
556					—CN
557					—CN
558					—≡—CN
559	—				—CN
560	—				—CN
561	—				—≡—CN
562	—				—CN
563	—				—CN
564	—				—≡—CN
565	—				—CN
566	—				—CN
567	—				—≡—CN
568	—				—CN
569	—				—CN
570	—				—≡—CN
571	—				—CN
572	—				—CN
573	—				—≡—CN
574	—				—CN
575	—				—CN
576	—				—CN
577					—CN
578					—CN
579					—≡—CN
580					—CN
581					—CN
582					—≡—CN
583					—CN
584					—CN
585					—≡—CN
586					—CN
587					—CN
588					—≡—CN
589					—CN
590					—CN
591					—≡—CN
592					—CN
593					—CN
594					—CN
595					—CN
596					—CN
597					—≡—CN
598					—CN
599					—CN
600					—≡—CN
601					—CN
602					—CN
603					—≡—CN
604					—CN
605					—CN
606					—≡—CN
607					—CN
608					—CN
609					—≡—CN
610					—CN
611					—CN
612					—≡—CN
613					—CN
614					—CN
615					—≡—CN
616					—CN
617					—CN
618					—≡—CN
619					—CN
620					—CN
621					—≡—CN
622					—CN
623					—CN
624					—≡—CN
625			—		—CN
626			—		—CN
627			—		—≡—CN
628			—		—CN
629			—		—CN
630			—		—≡—CN
631					—F
632					—OCF 3
633					—CF 3
634					—OCF 2 H
635					—CN
636					—≡—CN
637					—F
638					—F
639					—OCF 3
640					—CF 2 H
641					—CN
642					—≡—CN
643					—F
644					—OCF 3
645					—OCF 3
646					—CF 3
647					—CN
648					—≡—CN
649					—CN
650					—CN
651					—≡—CN
652					—CN
653					—CN
654					—≡—CN
655					—CN
656					—CN
657					—≡—CN
658	—				—CN
659	—				—CN
660	—				—≡—CN
661	—				—CN
662	—				—CN
663	—				—CN
664	—				—CN
665	—				—≡—CN
666	—				—CN
667					—F
668					—F
669					—F
670					—F
671					—F
672					—F
673	—				—F
674	—				—F
675	—				—F
676					—OC 2 H 5
677					—CH 3
678					—OC 2 H 5
679					—C 3 H 7
680					—OC 3 H 7
681					—OC 2 H 5
682					—C 2 H 5
683					—SCH 3
684					—OC 2 H 5
685					—C 4 H 9
686					—OC 2 H 5
687					—C 3 H 7
688					—OC 3 H 7
689					—OCH 3
690					—C 5 H 11
691	—				—OC 2 H 5
692	—				—CH 3
693	—				—OC 2 H 5
694	—				—C 2 H 5
695	—				—OC 3 H 7
696					—OC 2 H 5
697					—C 2 H 5
698					—OCH 3
699					—OC 2 H 5
700					—C 4 H 9
701					—OC 2 H 5
702					—C 3 H 7
703					—OC 3 H 7
704					—OCH 3
705					—C 5 H 11
706	—				—OC 2 H 5
707	—				—C 3 H 7
708	—				—OCH 3
709	—				—C 6 H 13
710	—				—OC 2 H 5
711					—OC 2 H 5
712					—CH 3
713					—OCH 3
714					—SC 2 H 5
715					—C 4 H 9
716					—OC 2 H 5
717					—C 3 H 7
718	—				—OC 2 H 5
719	—				—C 3 H 7
720	—				—OC 2 H 5
721	—				—OC 2 H 5
722	—				—CH 3
723	—				—OC 3 H 7
724	—				—C 6 H 13
725	—				—OC 2 H 5
726	—				—OC 2 H 5
727	—				—SCH 3
728	—				—C 2 H 5
729	—				—OC 2 H 5
730	—				—CH 3
731					—OC 2 H 5
732					—CH 3
733					—OC 2 H 5
734					—C 3 H 7
735					—OC 2 H 5
736					—C 4 H 9
737					—C 7 H 15
738
739
740					—C 5 H 11
741					—OC 8 H 17
742					—C 5 H 11
743					—COOCH 3
744					—COOC 2 H 5
745					—COOC 3 H 7
746					—C 5 H 11
747					—OC 4 H 9
748
749					—C 2 H 5
750
751					—C 2 H 5
752					—C 8 H 17
753
754
755					—C 3 H 7
756					—C 3 H 7
757					—C 4 H 9
758
759					—OC 5 H 11
760
761					—C 5 H 11
762					—CH 2 OCH 3
763					—C 2 H 5
764
765					—OC 2 H 5
766					—OC 6 H 13
767					—C 8 H 17
768
769					—C 3 H 7
770					—C 4 H 9
771					—C 5 H 11
772					—OC 7 H 15
773
774
775					—C 5 H 11
776					—C 2 H 5
777					—C 4 H 9
778					—C 2 H 4 OCH 3
779
780
781					—C 3 H 7
782					—C 6 H 13
783					—OC 7 H 15
784
785					—C 3 H 7
786					—C 3 H 7
787					—OC 5 H 11
788					—C 6 H 13
789
790
791					—C 3 H 7
792					—OC 4 H 9
793
794					—C 3 H 6 OC 3 H 7
795					—CH 2 OC 2 H 5
796					—C 3 H 7
797					—C 5 H 11
798					—OC 7 H 15
799
800					—C 3 H 7
801					—C 5 H 11
802					—OC 6 H 11
803					—C 4 H 9
804					—C 2 H 4 OC 3 H 7
805
806					—C 3 H 7
807					—OC 2 H 5
808
809					—CH 2 OC 4 H 9
810					—CH 2 OC 2 H 5
811	—				—C 9 H 19
812	—				—C 5 H 11
813	—				—OCH 3
814	—
815	—				—C 2 H 5
816	—				—C 3 H 7
817	—				—OC 5 H 11
818	—				—C 4 H 9
819	—
820	—
821	—				—C 3 H 7
822	—				—OC 3 H 7
823	—
824	—				—CH 2 OC 3 H 7
825	—				—CH 3
826					—C 3 H 7
827					—C 2 H 5
828					—OCH 3
829
830
831					—C 3 H 7
832					—OC 3 H 7
833
834					—C 3 H 6 OC 2 H 5
835					—CH 3
836	—				—C 3 H 7
837	—				—OC 3 H 7
838	—				—C 2 H 5
839	—
840	—
841	—				—C 10 H 21
842	—				—C 4 H 9
843	—				—OC 2 H 5
844	—
845	—				—C 2 H 5
846	—				—C 3 H 7
847	—				—OC 6 H 13
848	—				—C 2 H 5
849	—
850	—
851					—C 3 H 7
852					—OC 4 H 9
853
854					—C 3 H 6 OCH 3
855
856	—				—C 3 H 7
857	—				—C 2 H 5
858	—				—OC 3 H 7
859	—
860	—
861	—				—C 3 H 7
862	—				—OC 7 H 15
863	—
864	—				—C 2 H 4 OC 2 H 5
865	—				—CH 3
866	—		—		—C 3 H 7
867	—		—		—OC 3 H 7
868	—		—		—C 2 H 5
869	—		—
870	—		—
871	—		—		—C 3 H 7
872	—		—		—C 5 H 11
873	—		—		—OC 2 H 5
874	—		—		—C 3 H 7
875	—		—		—OC 2 H 5
876	—		—
877	—		—		—C 2 H 5
878	—		—		—C 3 H 7
879	—		—		—OCH 3
880	—		—
881	—		—		—CH 3
882	—		—		—C 3 H 7
883	—		—		—C 2 H 4 OC 2 H 5
884	—		—
885	—		—		—C 6 H 13
886	—		—		—CH 3
887	—		—		—OCH 3
888	—		—
889	—		—		—C 3 H 7
890	—		—		—C 2 H 5
891	—		—		—OC 2 H 5
892	—		—
893	—		—		—C 3 H 7
894	—		—		—C 3 H 7
895	—		—		—CH 3
896	—		—		—OC 2 H 5
897	—		—		—C 3 H 7
898	—		—		—OCH 3
899	—		—
900	—		—		—C 8 H 17
901					—C 3 H 7
902					—C 5 H 11
903					—OC 4 H 9
904	—				—C 5 H 11
905	—				—C 3 H 7
906	—
907	—				—C 3 H 7
908	—				—C 5 H 11
909	—
910	—				—C 2 H 5
911	—				—C 3 H 7
912	—				—OC 5 H 11
913	—				—C 3 H 7
914	—				—C 5 H 11
915	—				—OCH 3
916					—C 3 H 7
917					—C 4 H 9
918					—OC 6 H 13
919	—				—C 5 H 11
920	—				—OC 3 H 7
921	—				—CH 3
922	—				—C 3 H 7
923	—				—OC 3 H 7
924	—				—CH 3
925	—				—C 2 H 5
926	—				—OC 3 H 7
927	—				—C 6 H 13
928	—				—C 3 H 7
929	—				—OC 5 H 11
930	—
931					—CH 3
932					—OC 2 H 5
933
934					—C 3 H 7
935	—				—C 3 H 7
936	—				—OC 4 H 9
937	—
938	—				—C 3 H 7
939					—C 2 H 5
940					—CH 3
941					—OC 3 H 7
942	—				—C 3 H 7
943	—				—OC 2 H 5
944	—
945	—				—C 8 H 17
946					—CH 3
947					—OC 2 H 5
948
949					—C 3 H 7
950					—C 4 H 9
951					—OC 2 H 5
952
953					—C 3 H 7
954			—		—C 2 H 5
955			—		—C 2 H 5
956			—		—OC 4 H 9
957	—		—		—C 3 H 7
958	—		—		—OC 2 H 5
959	—		—
960	—		—		—C 6 H 11
961					—≡
962					—≡—
963	—				—≡—
964
965	—
966
967	—		—
968	—
969
970
971	—		—≡—
972	—≡—
973
974	—≡—		—≡—
975
976	—		—		—F
977	—		—		—Cl
978	—		—		—OCF 3
979	—		—		—CF 3
980	—		—		—OCHF 2
981	—		—		—OCH 2 CF 3
982	—		—		—F
983	—		—		—OCHF 2
984	—		—		—F
985	—		—		—OCF 3
986	—		—		—F
987	—		—		—Cl
988	—		—		—F
989	—		—		—OCHF 2
990	—		—		—OCF 3
991	—		—		—F

Examples in which the compounds of the present invention were used as the components for the compositions shall be shown below. The compounds used in the composition examples and the examples described later were represented by codes exhibited by definitions which were shown in the following Table 1.

TABLE 1
Method for Description of Compounds Using Symbols
R—(SiH                                                                        3                                                                    —Y1—)A1—Z1— · · · · · · —Zn—An—X(—Y2)
1) Left Terminal Group R—, SiH                                                                        3                                                                    —Y1— Symbol
C                                                                        n                                                                    H                                                                        2n+1                                                                    — n—
C                                                                        n                                                                    H                                                                        2n+1                                                                    O— nO—
C                                                                        n                                                                    H                                                                        2n+1                                                                    OC                                                                        m                                                                    H                                                                        2m+1                                                                    — nOm—
CH                                                                        2                                                                    ═CH— V—
CH                                                                        2                                                                    ═CHC                                                                        n                                                                    H                                                                        2n                                                                    — Vn—
C                                                                        n                                                                    H                                                                        2n+1                                                                    CH═CHC                                                                        m                                                                    H                                                                        2m                                                                    — nVm—
C                                                                        n                                                                    H                                                                        2n+1                                                                    CH═CHC                                                                        m                                                                    H                                                                        2m                                                                    CH═CHC                                                                        k                                                                    H                                                                        2k                                                                    — nVmVk—
CF                                                                        2                                                                    ═CH— VFF—
CF                                                                        2                                                                    ═CHC                                                                        n                                                                    H                                                                        2n                                                                    — VFFn—
SiH                                                                        3                                                                    C                                                                        n                                                                    H                                                                        2n                                                                    — Sin—
2) Ring Structure —An—           Symbol
                                 B
                                 B(F)
                                 B(F, F)
                                 H
                                 Ch
                                 G
                                 Py
                                 B(2F, 3F)
                                 B(2CN, 3CN)
3) Bonding Group —Zn—            Symbol
—C                                                                        2                                                                    H                                                                        4                                                                    — 2
—C                                                                        4                                                                    H                                                                        8                                                                    — 4
—COO—                            E
—C≡C—                            T
—CH═CH—                          V
—CF                                                                        2                                                                    O— CF2O
—OCF                                                                        2                                                                    — OCF2
4) Right Terminal Group —X, —Y2  Symbol
—F                               —F
—Cl                              —CL
—CN                              —C
—CF                                                                        3 —CF3
—OCF                                                                        3 —OCF3
—OCF                                                                        2                                                                    H —OCF2H
—C                                                                        n                                                                    H                                                                        2n+1 —n
—OC                                                                        n                                                                    H                                                                        2n+1 —On
—COOCH                                                                        3 —EMe
—C                                                                        n                                                                    H                                                                        2n                                                                    CH═CH                                                                        2 —nV
—C                                                                        m                                                                    H                                                                        2m                                                                    CH═CHC                                                                        n                                                                    H                                                                        2n+1 —mVn
—CH═CF                                                                        2 —VFF
—C                                                                        n                                                                    H                                                                        2n                                                                    CH═CF                                                                        2 —nVFF
—C≡C—CN                          —TC
5) Examples of Description
Example 1  3-H2B(F, F)B(F)—F
Example 2  Si1-HH-5
Example 3  Si2-HB(F, F)—C

In the examples, “%” represents “weight %”, and “part” represents “part by weight” unless otherwise described. When a cis-trans isomer is present in the compound, it means a trans type. When a left terminal group is not described, the group represents a hydrogen atom.

Example 5

Si2-HB (F, F)-C (No. 459) 15.0%
Si1-HH-5 (No. 742)        8.0%
1V2-BEB (F, F)-C          5.0%
3-HB-C                    10.0%
1-BTB-3                   5.0%
2-BTB-1                   10.0%
3-HH-4                    3.0%
3-HHB-1                   11.0%
3-HHB-3                   9.0%
3-H2BTB-2                 4.0%
3-H2BTB-3                 4.0%
3-H2BTB-4                 4.0%
3-HB (F) TB-2             6.0%
3-HB (F) TB-3             6.0%
NI = 74.1 (° C.)
η = 15.5 (mPa · s)
Δn = 0.150
Δε = 9.6
Vth = 1.81 (V)

When adding 0.8 part of CM33 to 100 parts of the composition described above, the pitch was 11.3 μm.

Example 6

Si2-HB (F, F)-C (No. 459) 13.0%
2O1-BEB (F)-C             5.0%
3O1-BEB (F)-C             15.0%
4O1-BEB (F)-C             13.0%
2-HHB (F)-C               15.0%
3-HHB (F)-C               15.0%
3-HB (F) TB-2             4.0%
3-HB (F) TB-3             4.0%
3-HB (F) TB-4             4.0%
3-HHB-1                   8.0%
3-HHB-O1                  4.0%
NI = 85.4 (° C.)
η = 80.2 (mPa · s)
Δn = 0.143
Δε = 31.1
Vth = 0.86 (V)

Example 7

Si3-HB (F, F) B (F)-F (No. 189) 4.0%
5-PyB-F                         4.0%
3-PyB (F)-F                     4.0%
2-BB-C                          5.0%
5-BB-C                          5.0%
2-PyB-2                         2.0%
3-PyB-2                         2.0%
4-PyB-2                         2.0%
6-PyB-O5                        3.0%
6-PyB-O6                        3.0%
6-PyB-O7                        3.0%
6-PyB-O8                        3.0%
3-PyBB-F                        6.0%
4-PyBB-F                        6.0%
5-PyBB-F                        6.0%
3-HHB-1                         6.0%
3-HHB-3                         8.0%
2-H2BTB-2                       4.0%
2-H2BTB-3                       4.0%
2-H2BTB-4                       5.0%
3-H2BTB-2                       5.0%
3-H2BTB-3                       5.0%
3-H2BTB-4                       5.0%
NI = 93.2 (° C.)
η = 33.4 (mPa · s)
Δn = 0.198
Δε = 6.5
Vth = 2.26 (V)

Example 8

Si2-HHB (F)-OCF3 (No. 36) 5.0%
Si3-HHB (F)-OCF3 (No. 39) 5.0%
3-GB-C                    10.0%
2-BEB-C                   12.0%
3-BEB-C                   4.0%
3-PyB (F)-F               6.0%
3-HEB-O4                  8.0%
4-HEB-O2                  6.0%
5-HEB-O1                  6.0%
3-HEB-O2                  5.0%
5-HEB-O2                  4.0%
5-HEB-5                   5.0%
4-HEB-5                   5.0%
1O-BEB-2                  4.0%
3-HHB-1                   6.0%
3-HHEBB-C                 3.0%
3-HBEBB-C                 3.0%
5-HBEBB-C                 3.0%
NI = 74.0 (° C.)
η = 39.5 (mPa · s)
Δn = 0.117
Δε = 10.7
Vth = 1.36 (V)

Example 9

Si4-HB (F) EB-OCF3 (No. 219) 3.0%
3-HR-C                       18.0%
1O1-HB-C                     10.0%
3-HB (F)-C                   10.0%
2-PyB-2                      2.0%
3-PyB-2                      2.0%
4-PyB-2                      2.0%
1O1-HH-3                     7.0%
2-BTB-O1                     7.0%
3-HHB-1                      7.0%
3-HHB-F                      4.0%
3-HHB-O1                     4.0%
3-HHB-3                      8.0%
3-H2BTB-2                    3.0%
3-H2BTB-3                    3.0%
2-PyBH-3                     4.0%
3-PyBH-3                     3.0%
3-PyBB-2                     3.0%
NI = 80.2 (° C.)
η = 18.3 (mPa · s)
Δn = 0.140
Δε = 8.3
Vth = 1.73 (V)

Example 10

Si2-HB (F, F)-C (No. 459) 12.0%
2-BEB (F)-C               6.0%
3-BEB (F)-C               4.0%
1V2-BEB (F, F)-C          10.0%
3-HH-EMe                  10.0%
3-HB-O2                   18.0%
7-HEB-F                   2.0%
3-HHEB-F                  2.0%
5-HHEB-F                  2.0%
3-HBEB-F                  4.0%
2O1-HBEB (F)-C            2.0%
3-HB (F) EB (F)-C         2.0%
3-HBEB (F, F)-C           2.0%
3-HHB-F                   4.0%
3-HHB-O1                  4.0%
3-HHB-3                   13.0%
3-HEBEB-F                 2.0%
3-HEBEB-1                 2.0%
NI = 69.6 (° C.)
η = 31.6 (mPa · s)
Δn = 0.109
Δε = 24.1
Vth = 0.90 (V)

Example 11

Si2-HB (F, F)-C (No. 459) 10.0%
2-BEB (F)-C               5.0%
3-BEB (F)-C               4.0%
4-BEB (F)-C               12.0%
1V2-BEB (F, F)-C          6.0%
3-HB-O2                   10.0%
3-HH-4                    3.0%
3-HHB-F                   3.0%
3-HHB-1                   8.0%
3-HHB-O1                  4.0%
3-HBEB-F                  4.0%
3-HHEB-F                  7.0%
5-HHEB-F                  7.0%
3-H2BTB-2                 4.0%
3-H2BTB-3                 4.0%
3-H2BTB-4                 4.0%
3-HB (F) TB-2             5.0%
NI = 81.3 (° C.)
η = 36.2 (mPa · s)
Δn = 0.133
Δε = 24. 5
Vth = 1.12 (V)

Example 12

Si2-HB (2F3F)-O2 (No. 678) 6.0%
Si4-HB (2F3F)-O2 (No. 676) 6.0%
2-BEB-C                    12.0%
3-BEB-C                    4.0%
4-BEB-C                    6.0%
3-HB-C                     28.0%
4-HEB-O2                   8.0%
5-HEB-O1                   8.0%
3-HEB-O2                   6.0%
5-HEB-O2                   5.0%
3-HHB-1                    7.0%
3-HHB-O1                   4.0%
NI = 55.4 (° C.)
η = 27.6 (mPa · s)
Δn = 0.114
Δε = 9.3
Vth = 1.41 (V)

Example 13

Si2-HB (F) B (F, F)-F (No. 193) 7.0%
2-BEB-C                         10.0%
5-BB-C                          12.0%
1-BTB-3                         7.0%
2-BTB-1                         10.0%
1O-BEB-2                        10.0%
1O-BEB-5                        12.0%
2-HHB-1                         4.0%
3-HHB-F                         4.0%
3-HHB-1                         7.0%
3-HHB-O1                        4.0%
3-HHB-3                         13.0%
NI = 65.2 (° C.)
η = 20.6 (mPa · s)
Δn = 0.155
Δε = 6.9
Vth = 1.71 (V)

Example 14

Si2-HB (F, F)-C (No. 459)     12.0%
Si2-HHB (F, F)-OCF2H (No. 41) 7.0%
Si3-HHB (F, F)-OCF2H (No. 44) 7.0%
Si4-HHB (F, F)-OCF2H (No. 45) 7.0%
2-HB-C                        5.0%
3-HB-O2                       15.0%
2-BTB-1                       3.0%
3-HHB-1                       8.0%
3-HHB-F                       4.0%
3-HHB-O1                      5.0%
3-HHB-3                       14.0%
3-HHEB-F                      4.0%
5-HHEB-F                      4.0%
3-HHB (F, F)-F                5.0%
NI  = 81.4 (° C.)
η = 24.9 (mPa · s)
Δn = 0.091
Δε = 7.3
Vth = 2.00 (V)

Example 15

Si2-HB (F) EB-OCF3 (No. 211) 4.0%
Si3-HB (F) EB-OCF3 (No. 224) 4.0%
Si2-HH-2V (No.738)           7.0%
3-BEB (F)-C                  8.0%
3-HB-C                       8.0%
V-HB-C                       8.0%
3-HB-O2                      3.0%
3-HH-2V                      14.0%
V2-HHB-1                     15.0%
3-HHB-1                      5.0%
3-HHEB-F                     7.0%
3-H2BTB-2                    6.0%
3-H2BTB-3                    6.0%
3-H2BTB-4                    5.0%
NI = 101.0 (° C.)
η = 17.1 (mPa · s)
Δn = 0.130
Δε = 8.6
Vth = 2.18 (V)

Example 16

Si2-HB (F, F)-C (No. 459) 24.0%
V2-HB-C                   12.0%
1V2-HB-C                  12.0%
3-HB (F)-C                5.0%
2-BTB-1                   2.0%
3-HH-4                    8.0%
3-HH-VFF                  6.0%
2-HHB-C                   3.0%
3-HHB-C                   6.0%
3-HB (F) TB-2             8.0%
3-H2BTB-2                 5.0%
3-H2BTB-3                 5.0%
3-H2BTB-4                 4.0%
NI = 60.6 (° C.)
η = 19.3 (mPa · s)
Δn = 0.135
Δε = 12.8
Vth = 1.67 (V)

Example 17

Si2-HHB (2F, 3F)-O2 (No. 691) 7.0%
5-BEB (F)-C                   5.0%
V-HB-C                        11.0%
5-PyB-C                       6.0%
4-BB-3                        11.0%
3-HH-2V                       10.0%
5-HH-V                        11.0%
V2-HHB-1                      15.0%
3-HHB-1                       9.0%
1V2-HBB-2                     10.0%
3-HHEBH-3                     5.0%
NI = 91.1 (° C.)
η = 17.8 (mPa · s)
Δn = 0.116
Δε = 4.2
Vth = 2.53 (V)

Example 18

Si2-HB (F, F)-C (No. 459) 10.0%
1V2-BEB (F, F)-C          8.0%
3-HB-C                    10.0%
V2V-HB-C                  4.0%
V2V-HH-3                  19.0%
3-HB-O2                   4.0%
3-HHB-1                   10.0%
3-HHB-3                   15.0%
3-HB (F) TB-2             4.0%
3-HB (F) TB-3             4.0%
3-H2BTB-2                 4.0%
3-H2BTB-3                 4.0%
3-H2BTB-4                 4.0%
NI = 87.6 (° C.)
η = 17.6 (mPa · s)
Δn = 0.121
Δε = 9.7
Vth = 1.91 (V)

Example 19

Si2-HB (F, F)-C (No. 459) 10.0%
V2-HB-TC                  10.0%
3-HB-TC                   10.0%
5-HB-C                    7.0%
5-BB-C                    3.0%
2-BTB-1                   10.0%
2-BTB-O1                  5.0%
3-HH-4                    5.0%
3-HHB-1                   10.0%
3-HHB-3                   11.0%
3-H2BTB-2                 3.0%
3-H2BTB-3                 3.0%
3-HB (F) TB-2             3.0%
5-BTB (F) TB-3            10.0%
NI = 89.6 (° C.)
η = 14.5 (mPa · s)
Δn = 0.197
Δε = 8.5
Vth = 1.87 (V)

Example 20

	Si2-HB (F, F) -C	(No. 459)	12.0%
	Si1-HH-5	(No. 742)	10.0%
	Si2-HH-2V	(No. 738)	10.0%
	1V2-BEB (F, F) -C		6.0%
	3-HB-C		6.0%
	2-BTB-1		10.0%
	5-HH-VFF		10.0%
	1-BHH-VFF		8.0%
	1-BHH-2VFF		11.0%
	3-H2BTB-2		5.0%
	3-H2BTB-3		4.0%
	3-H2BTB-4		4.0%
	3-HHB-1		4.0%
	NI = 67.8 (° C.)
	η = 12.7 (mPa.s)
	Δn = 0.121
	Δε = 8.5
	Vth = 1.79 (V)

Example 21

	Si2-HB (F, F) -C	(No. 459)	15.0%
	5-HBCF2OB (F, F) -C	3.0%
	3-HB (F, F) CF2OB (F, F) -C	3.0%
	3-HB-C	3.0%
	2-BTB-1	10.0%
	5-HH-VFF	30.0%
	1-BHH-VFF	8.0%
	1-BHH-2VFF	11.0%
	3-H2BTB-2	5.0%
	3-H2BTB-3	4.0%
	3-H2BTB-4	4.0%
	3-HHB-1	4.0%
	NI = 66.8 (° C.)
	η = 13.0 (mPa.s)
	Δn = 0.116
	Δε = 7.0
	Vth = 2.03 (V)

Example 22

	Si3-HHB (F) -OCF3	(No. 39)	8.0%
	Si4-HHB (F) -OCF3	(No. 38)	8.0%
	Si2-HB (F, F) B (F) -F	(No. 188)	6.0%
	Si3-HB (F, F) B (F) -F	(No. 189)	6.0%
	2-HHB (F) -F		17.0%
	3-HHB (F) -F		17.0%
	2-H2HB (F) -F		10.0%
	3-H2HB (F) -F		5.0%
	5-H2HB (F) -F		10.0%
	5-HBB (F) -F		13.0%
	NI = 86.7 (° C.)
	η = 29.8 (mPa.s)
	Δn = 0.089
	Δε = 6.6
	Vth = 1.90 (V)

When adding 0.3 part of CN to 100 parts of the composition described above, the pitch was 78.7 μm.

Example 23

	Si2-HHB (F, F) -OCF2H	(No. 41)	10.0%
	Si3-HHB (F, F) -OCF2H	(No. 44)	10.0%
	Si2-HB (F) B (F, F) -F	(No. 193)	9.0%
	Si3-HB (F) B (F, F) -F	(No. 194)	9.0%
	7-HB (F, F) -F		3.0%
	3-HB-O2		7.0%
	5-HHB (F) -F		10.0%
	5-HBB (F) -F		16.0%
	2-HBB-F		4.0%
	3-HBB-F		4.0%
	5-HBB-F		3.0%
	3-HBB (F, F) -F		5.0%
	5-HBB (F, F) -F		10.0%
	NI = 71.1 (° C.)
	η = 31.5 (mPa.s)
	Δn = 0.111
	Δε = 7.7
	Vth = 1.69 (V)

Example 24

	Si2-HB (F, F) -C	(No. 459)	8.0%
	Si1-HH-5	(No. 742)	6.0%
	5-HB-CL		16.0%
	3-HH-4		6.0%
	3-HH-5		4.0%
	3-HHB-F		4.0%
	3-HHB-CL		3.0%
	4-HHB-CL		4.0%
	3-HHB (F) -F		10.0%
	4-HHB (F) -F		9.0%
	5-HHB (F) -F		9.0%
	5-HBB (F) -F		4.0%
	5-HBBH-101		3.0%
	3-HHBB (F, F) -F		2.0%
	4-HHBB (F, F) -F		3.0%
	5-HHBB (F, F) -F		3.0%
	3-HH2BB (F, F) -F		3.0%
	4-HH2BB (F, F) -F		3.0%
	NI = 100.8 (° C.)
	η = 18.7 (mPa.s)
	Δn = 0.089
	Δε = 5.7
	Vth = 2.25 (V)

Example 25

	Si2-HHB (F) -OCF3	(No. 36)	8.0%
	Si3-HHB (F) -OCF3	(No. 39)	8.0%
	Si2-HB (F) EB-OCF3	(No. 211)	10.0%
	Si4-HB (F, F) B (F) -F	(No. 182)	10.0%
	Si4-HB (F) B (F, F) -F	(No. 191)	10.0%
	3-HHB (F, F) -F		9.0%
	5-H2HB (F, F) -F		8.0%
	3-HBB (F, F) -F		11.0%
	3-H2BB (F, F) -F		10.0%
	5-HHBB (F, F) -F		3.0%
	5-HHEBB-F		2.0%
	3-HH2BB (F, F) -F		3.0%
	4-HBBH-1O1		4.0%
	5-HBBH-1O1		4.0%
	NI = 83.7 (° C.)
	η = 38.0 (mPa.s)
	Δn = 0.118
	Δε = 11.1
	Vth = 1.58 (V)

When adding 0.25 part of CM-43L to 100 parts of the composition described above, the pitch was 63.7 μm.

Example 26

	Si2-HB (F, F) -C	(No. 459)	12.0%
	Si4-HHB (F) -OCF3	(No. 38)	5.0%
	Si4-HB (F) EB-OCF3	(No. 219)	10.0%
	6-HB-F		9.0%
	7-HB-F		7.0%
	2-HHB-OCF3		7.0%
	3-HHB-OCF3		7.0%
	4-HHB-OCF3		7.0%
	3-HH2B-OCF3		4.0%
	5-HH2B-OCF3		4.0%
	3-HHB (F, F) -OCF3		5.0%
	3-HBB (F) -F		10.0%
	3-HH2B (F) -F		3.0%
	3-HB (F) BH-3		3.0%
	5-HBBH-3		3.0%
	3-HHB (F, F) -OCF2H		4.0%
	NI = 79.4 (° C.)
	η = 22.0 (mPa.s)
	Δn = 0.094
	Δε = 8.8
	Vth = 1.65 (V)

Example 27

	Si2-HB (F, F) B (F) -F	(No. 188)	7.0%
	Si3-HB (F, F) B (F) -F	(No. 189)	7.0%
	Si4-HB (F, F) B (F) -F	(No. 182)	15.0%
	Si2-HB (F) B (F, F) -F	(No. 193)	10.0%
	Si3-HB (F) B (F, F) -F	(No. 194)	11.0%
	Si4-HB (F) B (F, F) -F	(No. 191)	11.0%
	2-HHB (F) -F		3.0%
	4-HBB (F) -F		2.0%
	3-H2BB (F) -F		10.0%
	5-HBB (F, F) -F		6.0%
	2-HHB (F, F) -F		5.0%
	3-HHB (F, F) -F		5.0%
	4-HHB (F, F) -F		5.0%
	3-HHB-F		3.0%
	NI = 64.0 (° C.)
	η = 41.6 (mPa.s)
	Δn = 0.125
	Δε = 11.1
	Vth = 1.53 (V)

Example 28

	Si2-HHB (F, F) -OCF2H	(No. 41)	10.0%
	Si4-HHB (F, F) -OCF2H	(No. 45)	10.0%
	Si2-HB (F) EB-OCF3	(No. 211)	3.0%
	Si3-HB (F) EB-OCF3	(No. 224)	3.0%
	Si4-HB (F) EB-OCF3	(No. 219)	3.0%
	5-HB-CL		11.0%
	3-HH-4		8.0%
	5-HBB (F, F) -F		15.0%
	3-HHB (F, F) -F		8.0%
	3-HHEB (F, F) -F		10.0%
	3-HBEB (F, F) -F		5.0%
	5-HBEB (F, F) -F		3.0%
	3-HHBB (F, F) -F		6.0%
	3-HHB-1		5.0%
	NI = 85.7 (° C.)
	η = 25.5 (mPa.s)
	Δn = 0.100
	Δε = 8.6
	Vth = 1.70 (V)

Example 29

	Si4-HB (F) B (F, F) -F	(No. 191)	4.0%
	Si2-HH-2V	(No. 738)	6.0%
	7-HB (F) -F		6.0%
	5-H2B (F) -F		6.0%
	3-HB-O2		4.0%
	3-HH-4		6.0%
	2-HHB (F) -F		11.0%
	3-HHB (F) -F		11.0%
	5-HHB (F) -F		11.0%
	2-HBB (F) -F		2.0%
	3-HBB (F) -F		2.0%
	3-HBB (F, F) -F		3.0%
	2-HHBB (F, F) -F		4.0%
	3-HHBB (F, F) -F		5.0%
	3-HHEB-F		4.0%
	5-HHEB-F		4.0%
	3-HHB-1		7.0%
	3-HHB-F		4.0%
	NI = 97.3 (° C.)
	η = 20.4 (mPa.s)
	Δn = 0.086
	Δε = 4.8
	Vth = 2.34 (V)

Example 30

	Si2-HHB (F) -OCF3	(No. 36)	10.0%
	Si3-HHB (F) -OCF3	(No. 39)	10.0%
	Si2-HB (F, F) B (F) -F	(No. 188)	15.0%
	Si4-HB (F, F) B (F) -F	(No. 182)	15.0%
	Si2-HB (F) B (F, F) -F	(No. 193)	16.0%
	Si4-HB (F) B (F, F) -F	(No. 191)	16.0%
	3-HH-4		4.0%
	5-H2HB (F, F) -F		8.0%
	3-HBB (F, F) -F		3.0%
	3-HHBB (F, F) -F		3.0%
	NI = 41.8 (° C.)
	η = 34.8 (mPa.s)
	Δn = 0.102
	Δε = 12.2
	Vth = 1.18 (V)

Example 31

	Si2-HHB (F, F) -OCF2H	(No. 41)	10.0%
	Si4-HHB (F, F) -OCF2H	(No. 45)	10.0%
	Si2-HHB (F) -OCF3	(No. 36)	10.0%
	SI2-HB (F) EB -OCF3	(No. 211)	10.0%
	7-HB (F, F) -F		5.0%
	3-H2HB (F, F) -F		2.0%
	4-HHB (F, F) -F		5.0%
	3-HBB (F, F) -F		10.0%
	4-HHEB (F, F) -F		3.0%
	5-HHEB (F, F) -F		3.0%
	2-HBEB (F, F) -F		3.0%
	3-HBEB (F, F) -F		5.0%
	5-HBEB (F, F) -F		3.0%
	3-HGB (F, F) -F		15.0%
	3-HHBB (F, F) -F		6.0%
	NI = 76.9 (° C.)
	η = 39.0 (mPa.s)
	Δn = 0.094
	Δε = 14.5
	Vth = 1.32 (V)

Example 32

	Si2-HB (F, F) B (F) -F	(No. 188)	5.0%
	Si3-HB (F, F) B (F) -F	(No. 189)	5.0%
	Si4-HHB (F) -OCF3	(No. 38)	5.0%
	5-H4HB (F, F) -F		7.0%
	5-H4HB-OCF3		15.0%
	3-H4HB (F, F) -CF3		8.0%
	5-H4HB (F, F) -CF3		10.0%
	3-HB-CL		6.0%
	5-HB-CL		4.0%
	2-H2BB (F) -F		5.0%
	5-H2HB (F, F) -F		5.0%
	3-HHB-OCF3		5.0%
	3-H2HB-OCF3		5.0%
	V-HHB (F) -F		5.0%
	3-HHB (F) -F		5.0%
	3-HBEB (F, F) -F		5.0%
	NI = 60.5 (° C.)
	η = 28.6 (mPa.s)
	Δn = 0.093
	Δε = 9.3
	Vth = 1.64 (V)

Example 33

	Si4-HHB (2F, 3F) -O2	(No. 693)	3.0%
	Si1-HH-5	(No. 742)	5.0%
	Si2-HH-2V	(No. 738)	5.0%
	S-HB-CL		17.0%
	7-HB (F, F)-F		3.0%
	3-HH-5		5.0%
	3-HB-O2		15.0%
	3-H2HB (F, F) -F		5.0%
	4-H2HB (F, F) -F		5.0%
	3-HHB (F, F) -F		6.0%
	2-HHB (F) -F		7.0%
	3-HHB (F) -F		7.0%
	5-HHB (F) -F		7.0%
	3-HHB-1		5.0%
	3-HHB-O1		5.0%
	NI = 70.6 (° C.)
	η = 14.0 (mPa.s)
	Δn = 0.074
	Δε = 2.5
	Vth = 2.45 (V)

Example 34

	Si3-HHB (F) -OCF3	(No. 39)	10.0%
	Si4-HHB (F) -OCF3	(No. 38)	9.0%
	Si2-HHB (F, F) -OCF2H	(No. 41)	8.0%
	Si2-HB (F, F) B (F) -F	(No. 188)	10.0%
	Si4-HB (F) B (F, F) -F	(No. 191)	10.0%
	5-HB-CL		4.0%
	7-HHB (F) -F		9.0%
	4-HHB (F, F) -F		3.0%
	3-H2HB (F, F) -F		12.0%
	3-HBB (F, F) -F		2.0%
	2-HHBB (F, F) -F		6.0%
	3-GHB (F, F) -F		3.0%
	4-GHB (F, F) -F		8.0%
	5-GHB (F, F) -F		6.0%
	NI = 66.8 (° C.)
	η = 39.4 (mPa.s)
	Δn = 0.089
	Δε = 10.6
	Vth = 1.18 (V)

Example 35

	S i 2-HHB (F) -OCF3	(No. 36)	7.0%
	S i 4-HHB (F) -OCF3	(No. 38)	7.0%
	S i 3-HB (F) EB-OCF3	(No. 224)	10.0%
	S i 3-HB (F, F) B (F) -F	(No. 189)	7.0%
	S i 3-HB (F) B (F, F) -F	(No. 194)	7.0%
	3-HHB (F) -F		8.0%
	3-HHB (F, F) -F		8.0%
	3-HBB (F, F) -F		7.0%
	3-H2HB (F, F) -F		10.0%
	4-HHEB (F, F) -F		3.0%
	2-HBEB (F, F) -F		2.0%
	3-HBEB (F, F) -F		3.0%
	3-GHB (F, F) -F		3.0%
	4-GHB (F, F) -F		7.0%
	5-GHB (F, F) -F		7.0%
	3-HHBB (F, F) -F		4.0%
	NI = 70.5 (° C.)
	η = 41.0 (mPa · s)
	Δ n = 0.092
	Δ ε = 12.3
	Vth = 1.16 (V)

Example 36

	S i 2-HB (F, F) -C	(No. 459)	4.0%
	S i 3-HB (F) EB-OCF3	(No. 224)	5.0%
	S i 4-HHB (F, F) -OCF2H	(No. 45)	6.0%
	S i 2-HHB (F) -OCF3	(No. 36)	4.0%
	7-HB (F) -F		3.0%
	5-HB-CL		3.0%
	3-HH-4		9.0%
	3-HH-EMe		23.0%
	3-HHEB (F, F) -F		10.0%
	3-HHEB-F		8.0%
	5-HHEB-F		8.0%
	4-HGB (F, F) -F		5.0%
	3-H2GB (F, F) -F		5.0%
	5-GHB (F, F) -F		7.0%
	NI = 81.0 (° C.)
	η = 22.5 (mPa · s)
	Δ n = 0.069
	Δ ε = 6.7
	Vth = 1.41 (V)

Example 37

	S i 2-HB (F) B (F, F) -F	(No. 193)	10.0%
	S i 3-HB (F) B (F, F) -F	(No. 194)	10.0%
	S i 4-HB (F) B (F, F) -F	(No. 191)	10.0%
	3-H2HB (F, F) -F		5.0%
	5-H2HB (F, F) -F		5.0%
	5-HBB (F, F) -F		30.0%
	5-HBB (F) B-2		10.0%
	5-HBB (F) B-3		10.0%
	3-BB (F) B (F, F) -F		5.0%
	5-B2B (F, F) B (F) -F		5.0%
	NI = 94.0 (° C.)
	η = 52.1 (mPa · s)
	Δ n = 0.148
	Δ ε = 11.3
	Vth = 1.66 (V)

Example 38

	S i 2-HHB (F, F) -OCF2H	(No. 41)	6.0%
	S i 2-HB (F) EB-OCF3	(No. 211)	8.0%
	S i 2-HH-2V	(No. 738)	10.0%
	3-HB (F, F) CF2OB (F, F) -F		11.0%
	5-HB (F, F) CF2OB (F, F) -F		11.0%
	5-HB-CL		7.0%
	3-HH-4		4.0%
	2-HH-5		4.0%
	3-HHB-1		4.0%
	3-HHEB-F		6.0%
	5-HHEB-F		6.0%
	4-HHB (F, F) -F		3.0%
	4-HHEB (F, F) -F		3.0%
	5-HHEB (F, F) -F		2.0%
	2-HBEB (F, F) -F		3.0%
	3-HBEB (F, F) -F		3.0%
	5-HBEB (F, F) -F		3.0%
	2-HHBB (F, F) -F		3.0%
	3-HHBB (F, F) -F		3.0%
	NI = 81.0 (° C.)
	η = 22.1 (mPa · s)
	Δ n = 0.083
	Δ ε = 9.0
	Vth = 1.38 (V)

Example 39

	S i 2-HHB (F) -OCF3	(No. 36)	5.0%
	S i 2-HB (F, F) B (F) -F	(No. 188)	5.0%
	S i 2-HB (F) B (F, F) -F	(No. 193)	5.0%
	3-BB (F, F) CF2OB (F, F) -F		35.0%
	3-HH-4		8.0%
	3-HHB (F, F) -F		5.0%
	3-H2HB (F, F) -F		9.0%
	3-HBB (F, F) -F		5.0%
	2-HHBB (F, F) -F		3.0%
	3-HHBB (F, F) -F		3.0%
	3-HH2BB (F, F) -F		4.0%
	3-HHB-1		6.0%
	5-HBBH-101		7.0%
	NI = 76.7 (° C.)
	η = 29.8 (mPa · s)
	Δ n = 0.114
	Δ ε = 12.8
	Vth = 1.36 (V)

Example 40

	S i 2-HB (2F, 3F) -O2	(No. 678)	7.0%
	S i 4-HB (2F, 3F) -O2	(No. 676)	7.0%
	3-HEB-O4		28.0%
	4-HEB-O2		20.0%
	5-HEB-O1		20.0%
	3-HEB-O2		18.0%
	NI = 64.7 (° C.)
	η = 19.8 (mPa · s)
	Δ n = 0.089

Example 41

	S i 2-HB (2F, 3F) -O2	(No. 678)	12.0%
	S i 4-HB (2F, 3F) -O2	(No. 676)	11.0%
	S i 2-HHB (2F, 3F) -O2	(No. 691)	14.0%
	S i 4-HHB (2F, 3F) -O2	(No. 693)	15.0%
	S i 2-HHB (2F, 3F) -2	(No. 694)	14.0%
	3-HH-2		5.0%
	3-HH-4		6.0%
	3-HH-O1		4.0%
	3-HH-O3		5.0%
	5-HH-O1		4.0%
	3-HHB (2F, 3F) -2		10.0%
	NI = 74.0 (° C.)
	Δ n = 0.080
	Δ ε = −4.0

Example 42

	S i 2-HB (2F, 3F) -O2	(No. 678)	10.0%
	S i 4-HB (2F, 3F) -O2	(No. 676)	10.0%
	S i 2-HHB (2F, 3F) -O2	(No. 691)	12.0%
	S i 4-HHB (2F, 3F) -O2	(No. 693)	13.0%
	S i 2-HHB (2F, 3F) -2	(No. 694)	4.0%
	3-HH-5		5.0%
	3-HH-4		5.0%
	3-HH-O1		6.0%
	3-HH-O3		6.0%
	3-HB-O1		5.0%
	3-HB-O2		5.0%
	2-HHB (2F, 3F) -1		4.0%
	3-HHEH-3		5.0%
	3-HHEH-5		5.0%
	4-HHEH-3		5.0%
	NI = 78.5 (° C.)
	Δ n = 0.077
	Δ ε = −3.3

Example 43

	S i 2-HB (F, F) -C	(No. 459)	5.0%
	3-BB (2F, 3F) -O2		12.0%
	3-BB (2F, 3F) -O4		10.0%
	5-BB (2F, 3F) -O4		10.0%
	2-BB (2F, 3F) B-3		20.0%
	3-BB (2F, 3F) B-5		13.0%
	5-BB (2F, 3F) B-5		14.0%
	5-BB (2F, 3F) B-7		16.0%
	NI = 66.4 (° C.)
	Δ n = 0.190
	Δ ε = −1.9

Example 44

	S i 2-HB (F, F) B (F) -F	(No. 188)	3.0%
	S i 2-HB (F) B (F, F) -F	(No. 193)	3.0%
	3-HB-O1		15.0%
	3-HB-O2		6.0%
	3-HEB (2F, 3F) -O2		9.0%
	4-HEB (2F, 3F) -O2		9.0%
	5-HEB (2F, 3F) -O2		9.0%
	2-BB2B-O2		6.0%
	3-BB2B-O2		6.0%
	5-BB2B-O1		6.0%
	1-B2BB (2F) -5		7.0%
	3-B2BB (2F) -5		7.0%
	5-B (F) BB-02		7.0%
	3-BB (2F, 3F) B-3		7.0%
	NI = 75.4 (° C.)
	η = 24.2 (mPa · s)
	Δ n = 0.155

Example 45

	S i 4-HHB (F) -OCF3	(No. 38)	5.0%
	3-HH-O1		8.0%
	5-HH-O1		4.0%
	3-HH-4		5.0%
	3-HB (2F, 3F) -O2		16.0%
	5-HB (2F, 3F) -O2		21.0%
	3-HHB (2F, 3F) -1		7.0%
	3-HHB (2F, 3F) -O2		14.0%
	5-HHB (2F, 3F) -O2		20.0%
	NI = 61.0 (° C.)
	η = 23.8 (mPa · s)
	Δ n = 0.076
	Δ ε = −3.5

Example 46

	S i 2-HB (2F, 3F) -O2	(No. 678)	12.0%
	S i 4-HB (2F, 3F) -O2	(No. 676)	12.0%
	S i 2-HHB (2F, 3F) -1	(No. 692)	12.0%
	S i 2-HHB (2F, 3F) -2	(No. 694)	12.0%.
	S i 2-HHB (2F, 3F) -O2	(No. 691)	13.0%
	S i 4-HHB (2F, 3F) -O2	(No. 693)	13.0%
	3-HB-O1		15.0%
	3-HH-4		5.0%
	3-HHB-1		6.0%
	NI = 74.5 (° C.)
	η = 38.3 (mPa · s)
	Δ n = 0.090
	Δ ε = −3.4

Example 47

	S i 2-HB (2F, 3F) -O2	(No. 678)	12.0%
	S i 4-HB (2F, 3F) -O2	(No. 676)	12.0%
	S i 2-HHB (2F, 3F) -1	(No. 692)	12.0%
	S i 2-HHB (2F, 3F) -2	(No. 694)	12.0%
	3-HB-O1		15.0%
	3-HH-4		5.0%
	3-HHB (2F, 3F) -O2		13.0%
	5-HHB (2F, 3F) -O2		13.0%
	6-HEB (2F, 3F) -O2		6.0%
	NI = 74.2 (° C.)
	η = 36.2 (mPa · s)
	Δ n = 0.087
	Δ ε = −3.7

Example 48

	S i 2-HB (2F, 3F) -O2	(No. 678)	3.0%
	S i 4-HHB (2F, 3F) -O2	(No. 693)	3.0%
	3-HB-O2		20.0%
	1O1-HH-3		6.0%
	1O1-HH-5		5.0%
	3-HH-EMe		12.0%
	4-HEB-O1		9.0%
	4-HEB-O2		7.0%
	5-HEB-O1		8.0%
	3-HHB-1		6.0%
	3-HHB-3		6.0%
	3-HEB (2CN, 3CN) -O5		4.0%
	4-HEB (2CN, 3CN) -O5		3.0%
	5-HEB (2CN, 3CN) -O5		2.0%
	2-HBEB (2CN, 3CN) -O2		2.0%
	4-HBEB (2CN, 3CN) -O4		4.0%
	NI = 70.4 (° C.)
	η = 30.7 (mPa · s)
	Δ n = 0.080
	Δ ε = −5.4
	Vth = 1.60 (V)

EFFECTS OF THE INVENTION

The compounds of the present invention, that is, the di- to tetracyclic compounds having SiH 3 at a terminal are sufficiently stable physically and chemically under the condition where the a liquid crystal display device is usually used. It is characterized by having a good mutual solubility, a low viscosity and a low threshold voltage. Further, addition of the compound of the present invention makes it possible, as shown in the examples, to provide a liquid crystal composition and a liquid crystal display which have good characteristics and are novel.

Claims

1. A silicon compound represented by formula (1): wherein Y1 is alkylene having 1 to 10 carbon, in which any —CH2— in the alkylene may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but —O— and —O—, —S— and —S—, —O— and —S—, —O— and SiH3, or —S— and SiH3 are not adjacent, and at least one hydrogen in the alkylene may be replaced by halogen or —CN; Y2 is hydrogen, halogen, —CN, —C≡C—CN, or alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but —O— and —O—, —S— and —S—, or —O— and —S— are not adjacent, and any hydrogen in the alkyl may be replaced by halogen or —CN; A1, A2, A3, and A4 each are independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, or 1,4-phenylene in which any hydrogen is replaced by halogen, in which any hydrogen in 1,4-cyclohexylene or 1,4-cyclohexenylene may be replaced by halogen, any —CH2— in these rings may be replaced by —O—, but —O— and —O— are not adjacent, and any —CH═in 1,4-phenylene may be replaced by —N═; Z1, Z2 and Z3 each are independently a single bond, —(CH2)2—, —OCH2—, —CH2O—, —CH═CH—, —C≡C—, —(CH2)4—, —O(CH2)3—, —(CH2)3O—, —COO—, —OCO—, —OCF2—, or —CF2O—; and p and q each are independently 0 or 1.

2. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, p and q are 0; A1 and A2 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z1 is a single bond, —(CH2)2—, —CH═CH—, —C≡C—, —(CH2)4—, —COO—, —OCO—, —OCF2—, or —CF2O—.

3. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, p is 1; q is 0; A1, A2 and A3 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z1 and Z2 each are independently a single bond, —(CH2)2—, —CH═CH—, —C≡C—, —COO—, —OCO—, —(CH2)4—, —OCF2—, or —CF2O—.

4. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, p and q are 1; A1, A2, A3, and A4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which any hydrogen is replaced by halogen, or pirimidine-2,5-diyl; and Z1, Z2 and Z3 each are independently a single bond, —(CH2)2—, —CH═CH—, —C≡C—, —COO—, —OCO—, —(CH2)4—, —OCF2—, or —CF2O—.

5. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, Y1 is alkylene having 1 to 10 carbon, in which any —CH2— in the alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH3 are not adjacent; Y2 is alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O—, —CH═CH— or —C≡C—, but —O— and —O— are not adjacent; and A1, A2, A3, and A4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene, or pirimidine-2,5-diyl.

6. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, Y1 is alkylene having 1 to 10 carbon, in which any —CH2— in the alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH3 are not adjacent; Y2 is halogen, —CN, —C≡C—CN, or alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O—, but —O— and —O— are not adjacent, and at least one hydrogen is replaced by halogen; and A1, A2, A3, and A4 each are independently 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene, 1,4-phenylene in which at least one hydrogen is replaced by halogen, or pirimidine-2,5-diyl.

7. The silicon compound defined in claim 1, wherein in formula (1) described in claim 1, Y1 is alkylene having 1 to 10 carbon, in which any —CH2— in the alkylene may be replaced by —O— or —CH═CH—, but —O— and —O— or —O— and SiH3 are not adjacent; Y1 is alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O—, —S— or —CH═CH—, but —O— and —O—, —S— and —S— or —O— and —S— are not adjacent; A1, A2, A3 and A4 each are independently 1,4-cyclohexylene, 1,4-cyclohexylene in which one or more non-adjacent —CH2— are replaced by —O—, 1,4-phenylene in which a 2-position is replaced by halogen, 1,4-phenylene in which a 3-position is replaced by halogen, or 1,4-phenylene in which a 2-position and a 3-position are replaced by halogen, and one of A1, A2, A3, and A4 is always 1,4-phenylene in which a 2-position or a 3-position is replaced by halogen or 1,4-phenylene in which a 2-position and a 3-position are replaced by halogen.

8. A liquid crystal composition comprising at least one silicon compound defined in any one of claims 1 to 7.

9. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as a first component and at least one compound selected from the group of compounds represented by formulas (2), (3) and (4) as a second component: wherein R1 is alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the group may be replaced by fluorine; X1 is fluorine, chlorine, —OCF3, —OCF2H, —CF3, —CF2H, —CFH2, —OCF2CF2H, or —OCF2CFHCF3; L1 and L2 each are independently hydrogen or fluorine; Z4 and Z5 each are independently —(CH2)2—, —(CH2)4—, —COO—, —CF2O—, —OCF2—, —CH═CH—, or a single bond; a ring B and a ring C each are independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which at least one hydrogen is replaced by fluorine; and a ring D is 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen is replaced by fluorine.

10. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component and at least one compound selected from the group of compounds represented by formulas (5) and (6) as a second component: wherein R2 and R3 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; X2 is —CN or —C≡C—CN; a ring E is 1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; a ring F is 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which hydrogen is replaced by fluorine, or pyrimidine-2,5-diyl; a ring G is 1,4-cyclohexylene or 1,4-phenylene; Z6 is —(CH2)2—, —COO—, —CF2O—, —OCF2—, or a single bond; L3, L4 and L5 each are independently hydrogen or fluorine; and a, b and c each are independently 0 or 1.

11. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component and at least one compound selected from the group of compounds represented by formulas (7), (8) and (9) as a second component: wherein R4 and R5 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring I and a ring J each are independently 1,4-cyclohexylene or 1,4-phenylene; L6, L7, L8, and L9 each are independently hydrogen or fluorine, and all of them are not hydrogen simultaneously; and Z7 and Z8 each are independently —(CH2)2—, —COO— or a single bond.

12. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component, at least one compound selected from the group of the compounds represented by formulas (2), (3) and (4) as the second component, and at least one compound selected from the group of compounds represented by formulas (10), (11) and (12) as a third component: wherein R1 is alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the group may be replaced by fluorine; X1 is fluorine, chlorine, —OCF3, —OCF2H, —CF3, —CF2H, —CFH2, —OCF2CF2H, or —OCF2CFHCF3; L1 and L2 each are independently hydrogen or fluorine; Z4 and Z5 each are independently —(CH2)2—, —(CH2)4—, —COO—, —CF2O—, —OCF2—, —CH═CH—, or a single bond; a ring B and a ring C each are independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which at least one hydrogen is replaced by fluorine; and a ring D is 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen is replaced by fluorine, wherein R6 and R7 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O—and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring K, a ring M and a ring N each are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which hydrogen is replaced by fluorine; and Z9 and Z10 each are independently —C≡C—, —COO—, —(CH2)2—, —CH═CH—, or a single bond.

13. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component, at least one compound selected from the group of the compounds represented by formulas (5) and (6) as the second component, and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) as the third component: wherein R2 and R3 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; X2 is —CN or —C≡C—CN; a ring E is 1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; a ring F is 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which hydrogen is replaced by fluorine, or pyrimidine-2,5-diyl; a ring G is 1,4-cyclohexylene or 1,4-phenylene; Z6 is —(CH2)2—, —COO—, —CF2O—, —OCF2—, or a single bond; L3, L4 and L5 each are independently hydrogen or fluorine; and a, b and c each are independently 0 or 1, wherein R6 and R7 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring K, a ring M and a ring N each are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which hydrogen is replaced by fluorine; and Z9 and Z10 each are independently —C≡C—, —COO—, —(CH2)2—, —CH═CH—, or a single bond.

14. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component, at least one compound selected from the group of the compounds represented by formulas (7), (8) and (9) as the second component and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) as the third component: wherein R4 and R5 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring I and a ring J each are independently 1,4-cyclohexylene or 1,4-phenylene; L6, L7, L8, and L9 each are independently hydrogen or fluorine, and all of them are not hydrogen simultaneously; and Z7 and Z8 each are independently —(CH2)2—, —COO— or a single bond, wherein R6 and R7 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring K, a ring M and a ring N each are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which hydrogen is replaced by fluorine; and Z9 and Z10 each are independently —C≡C—, —COO—, —(CH2)2—, —CH═CH—, or a single bond.

15. A liquid crystal composition comprising at least one silicon compound described in any one of claims 1 to 7 as the first component, at least one compound selected from the group of the compounds represented by formulas (2), (3) and (4) as the second component, at least one compound selected from the group of the compounds represented by formulas (5) and (6) as the third component, and at least one compound selected from the group of the compounds represented by formulas (10), (11) and (12) as a fourth component: wherein R1 is alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the group may be replaced by fluorine; X1 is fluorine, chlorine, —OCF3, —OCF2H, —CF3, —CF2H, —CFH2, —OCF2CF2H, or —OCF2CFHCF3; L1 and L2 each are independently hydrogen or fluorine; Z4 and Z5 each are independently —(CH2)2—, —(CH2)4—, —COO—, —CF2O—, —OCF2—, —CH═CH—, or a single bond; a ring B and a ring C each are independently 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which at least one hydrogen is replaced by fluorine; and a ring D is 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen is replaced by fluorine, wherein R2 and R3 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; X2 is —CN or —C≡C—CN; a ring E is 1,4-cyclohexylene, 1,4-phenylene, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; a ring F is 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which hydrogen is replaced by fluorine, or pyrimidine-2,5-diyl; a ring G is 1,4-cyclohexylene or 1,4-phenylene; Z6 is —(CH2)2—, —COO—, —CF2O—, —OCF2—, or a single bond; L3, L4 and L5 each are independently hydrogen or fluorine; and a, b and c each are independently 0 or 1, wherein R6 and R7 each are independently alkyl having 1 to 10 carbon, in which any —CH2— in the alkyl may be replaced by —O— or —CH═CH—, but —O— and —O— are not adjacent, and any hydrogen in the alkyl may be replaced by fluorine; a ring K, a ring M and a ring N each are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl, 1,4-phenylene, or 1,4-phenylene in which hydrogen is replaced by fluorine; and Z9 and Z10 each are independently —C≡C—, —COO—, —(CH2)—, —CH═CH—, or a single bond.

16. A liquid crystal composition comprising the liquid crystal composition defined in claim 8 and further comprising at least one optically active compound.

17. A liquid crystal display comprising the liquid crystal composition defined in claim 8.

18. A liquid crystal display comprising the liquid crystal composition defined in claim 9.

19. A liquid crystal display comprising the liquid crystal composition defined in claim 10.

20. A liquid crystal display comprising the liquid crystal composition defined in claim 11.

21. A liquid crystal display comprising the liquid crystal composition defined in claim 12.

22. A liquid crystal display comprising the liquid crystal composition defined in claim 13.

23. A liquid crystal display comprising the liquid crystal composition defined in claim 14.

24. A liquid crystal display comprising the liquid crystal composition defined in claim 15.