Claims
- 1. An organophosphorus sulfonate ligand containing (a) at least one benzene ring having a trivalent phosphorus atom located at one position on the benzene ring and an SO.sub.3 M group located at a position on the benzene ring ortho thereto, or at least one benzene ring having a trivalent phosphorus atom connected through a methylene group to a first position on the benzene ring and an SO.sub.3 M group connected through a methylene group to a second position on the benzene ring ortho to the first position, or at least one bridging or fused aromatic ring system having a trivalent phosphorus atom and an SO.sub.3 M group, each located on a different aromatic ring in the system at substituent positions adjacent to one another, or at least one aromatic ring, other than a benzene ring, or heteroaromatic ring, each ring having a trivalent phosphorus atom and an SO.sub.3 M group located at substituent positions adjacent to one another, wherein M is selected from the group consisting of hydrogen, alkali metals, alkaline earth metals, and NR.sub.4 and PR.sub.4 wherein R is a hydrogen atom or a substituted or unsubstituted hydrocarbyl radical having 1 to 15 carbon atoms and each R can be alike or different or (b) a trivalent phosphorus atom connected through a group having the formula ##STR36## wherein A is an oxygen atom, an NH radical, or an NR radical; R.sup.2 and R.sup.3 are hydrogen atoms or a substituted or unsubstituted hydrocarbyl radical having 1 to 6 carbon atoms and can be alike or different; x is an integer 0 or 1; y is an integer from 1 to 3; and R and M are as defined above.
- 2. The ligand defined in claim 1 wherein the ligand contains at least one benzene ring having a trivalent phosphorus atom located at one position on the benzene ring and an SO.sub.3 M group located at a position on the benzene ring ortho thereto.
- 3. The ligand defined in claim 1 wherein the ligand contains at least one benzene ring having a trivalent phosphorus atoms connected through a methylene group to a first position on the benzene ring and an SO.sub.3 M group connected through a methylene group to a second position on the benzene ring.
- 4. The ligand defined in claim 1 wherein the ligand contains at least one bridging or fused aromatic ring system having trivalent phosphorus atom and an SO.sub.3 M group, each located on a different aromatic ring in the system at substituent positions adjacent to one another.
- 5. The ligand defined in claim 1 wherein the ligand contains at least one aromatic ring, other than a benzene ring, or heteroaromatic ring, each ring having a trivalent phosphorus atom and an SO.sub.3 M group located at substituent positions adjacent to one another.
- 6. The ligand defined in claim 1 wherein the organophosphorus-sulfonate ligand is in the alkali metal salt form.
- 7. The ligand defined in claims 1 or 6 wherein the ligand is an ortho-phosphorus sulfonate represented by the following structural formula: ##STR37## wherein R.sup.4, R.sup.5, R.sup.6 are hydrogen atoms or substituted or unsubstituted hydrocarbyl radicals having 1 to 20 carbon atoms and can be alike or different; R.sup.4 and R.sup.5 can be connected to form a heterocyclic radical; and M is as set forth above.
- 8. The ligand defined in claim 7 wherein R.sup.4, R.sup.5, and R.sup.6 are selected from the group consisting of hydrogen atoms or alkyl, aryl, alkoxy, aroxy, amino, or amido radicals, or mixtures thereof.
- 9. The ligand defined in claims 1 or 6 wherein the ligand is an alkylene-phosphino-sulfonate represented by the following structural formula: ##STR38## wherein R.sup.2, R.sup.3, A, M, x, and y are as set forth above, and R.sup.4 and R.sup.5 are hydrogen atoms or substituted or unsubstituted hydrocarbyl radicals having 1 to 20 carbon atoms, can be alike or different, and can be connected to form a heterocyclic radical.
- 10. The ligand defined in claim 9 wherein R.sup.4 and R.sup.5 are selected from the group consisting of hydrogen atoms or alkyl, aryl, alkoxy, aroxy, amino, or amido radicals, or mixtures thereof.
Parent Case Info
This application is a Division of prior U.S. application Ser. No. 887,183 filing date July 21, 1986.
US Referenced Citations (3)
Divisions (1)
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Number |
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Country |
Parent |
887183 |
Jul 1986 |
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