Claims
- 1. A coordination complex of a polyvalent metal ion and a nondiffusible compound capable of releasing at least one diffusible magenta dye moiety comprising a 4-(2-heterocyclylazo)phenol having a heterocyclic ring fused thereto, said compound having the formula: ##STR18## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring;
- (b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring;
- (c) CAR represents a ballasted carrier moiety capable of releasing said diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions;
- (d) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to said dye moiety through an oxygen atom thereon; and
- (e) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR which is linked to said dye moiety through an oxygen atom thereon.
- 2. The coordination complex of claim 1 which comprises a 2:1 complex of said nondiffusible compound and a divalent or trivalent hexacoordinate metal ion.
- 3. The coordination complex of claim 2 wherein said divalent or trivalent hexacoordinate metal ion is either zinc(II), nickel(II), copper(II), cobalt(II) or cobalt(III).
- 4. The coordination complex of claim 2 wherein said divalent or trivalent hexacoordinate metal ion is nickel(II).
- 5. The coordination complex of claim 1 which comprises: ##STR19## wherein CAR is ##STR20##
- 6. The coordination complex of claim 1 which comprises: ##STR21## wherein R is ##STR22##
- 7. A photographic element comprising a support having thereon a coordination complex of a polyvalent metal ion and a compound having the formula: ##STR23## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring, and
- (b) Y represents the atoms necessary to complete a 5- or 6-membered fused ring.
- 8. The photographic element of claim 7 wherein X represents the atoms necessary to complete a pyridine ring and Y represents the atoms necessary to complete a quinoline ring.
- 9. The photographic element of claim 7 wherein the metal ion is nickel (II), copper (II), zinc (II), platinum (II), palladium (II), cobalt (II) or cobalt (III).
- 10. A coordination complex of a polyvalent metal ion and a compound having the formula: ##STR24## wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring, and
- (b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring.
- 11. The coordination complex of claim 10 wherein X represents the atoms necessary to complete a pyridine ring and Y represents the atoms necessary to complete a quinoline ring.
- 12. The coordination complex of claim 10 wherein the metal ion is nickel (II), copper (II), zinc (II), platinum (II), palladium (II), cobalt (II) or cobalt (III).
Parent Case Info
This is a division of application Ser. No. 458,499, filed Jan. 17, 1983, which is a continuation-in-part of Ser. No. 380,843, filed May 21, 1982, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (4)
Number |
Date |
Country |
762451 |
Jul 1967 |
CAX |
1270940 |
Jul 1961 |
FRX |
52-106727 |
Jan 1977 |
JPX |
1568855 |
Jun 1980 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
458499 |
Jan 1983 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
380843 |
May 1982 |
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