Optical recording material

An optical recording material comprising at least one compound represented by general formula (I):

• wherein R1 and R2 each independently represent a hydrogen atom, a hydroxyl group, a halogen atom, a nitro group, a cyano group, a group represented by general formula (III), or a hydrocarbon group selected from an alkyl, an akenyl, an alkylaryl or an arylalkyl group having 1 to 30 carbon atoms, or any of these hydrocarbon groups which is interrupted with an ether linkage or a thioether linkage, and the above recited hydrocarbon groups may be substituted with an alkoxy group, an alkenyl group, a nitro group, a cyano group or a halogen atom;
• R1 and R2 may be taken together to form a ring structure;
• X1 represents —CR3R4— or —NH—;
• Y1 represents a group represented by general formula (III), or a hydrocarbon group selected from an alkyl, an akenyl, an alkylaryl or an arylalkyl group having 1 to 30 carbon atoms, or any of these hydrocarbon groups which is interrupted with an ether linkage or a thioether linkage, and the above recited hydrocarbon groups may be substituted with an alkoxy group, an alkenyl group, a nitro group, a cyano group or a halogen atom;
• R3 and R4 each represent a hydrogen atom, a group represented by general formula (III), or a hydrocarbon group selected from an alkyl, an akenyl, an alkylaryl or an arylalkyl group having 1 to 30 carbon atoms, or any of these hydrocarbon groups which is interrupted with an ether linkage or a thioether linkage, and the above recited hydrocarbon groups may be substituted with an alkoxy group, an alkenyl group, a nitro group, a cyano group or a halogen atom, provided that, when Y1 is a group represented by general formula (III), R3 is a hydrogen atom, a group represented by general formula (III), or a hydrocarbon group selected from an alkyl, an akenyl, an alkylaryl or an arylalkyl group having 1 to 30 carbon atoms, or any of these hydrocarbon groups which is interrupted with an ether linkage or a thioether linkage, and the above recited hydrocarbon groups may be substituted with an alkoxy group, an alkenyl group, a nitro group, a cyano group or a halogen atom, and when Y1 is a hydrocarbon group selected from an alkyl, an akenyl, an alkylaryl or an arylalkyl group having 1 to 30 carbon atoms, or any of these hydrocarbon groups which is interrupted with an ether linkage or a thioether linkage, and the above recited hydrocarbon groups may be substituted with an alkoxy group, an alkenyl group, a nitro group, a cyano group or a halogen atom, R3 is a group represented by general formulae (II), (II′) or (III);
• M represents Fe, Co, Ni, Ti, Cu, Zn, Zr, Cr, Mo, Os, Mn, Ru, Sn, Pd, Rh, Pt, or Ir;
• Anq− represents a q-valent anion, p is a number necessary to neutralize an electric charge;
• and q is 1 or 2,
• in the general formula (II), the bond between G and T is a double bond, a conjugated double bond, or a triple bond;
• G represents a carbon atom;
• T represents a carbon atom, an oxygen atom, or a nitrogen atom;
• w represents a number of 0 to 4;
• x, y, and z each represent 0 or 1 provided that, when T is oxygen, y=z=0, and when T is nitrogen, y+z=0 or 1;
• R01, R02, R03, and R04 each independently represent a hydrogen atom, a hydroxyl group, a cyano group, a nitro group, a halogen atom, or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, the methylene moiety of which may be substituted with —O— or —CO—;
• and R01 and R04 may be taken together to form a ring structure;
• in the general formula (II′), the bond between G′ and T′ is a double bond or a conjugated double bond;
• G′ represents a carbon atom;
• T′ represents a carbon atom or a nitrogen atom;
• w′ represents a number of 0 to 4;
• R01′ represents a hydrogen atom, a hydroxyl group, a cyano group, a nitro group, a halogen atom, or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, of which the methylene moiety may be substituted with —O— or —CO—;
• and the ring containing G′ and T′ is a 5-membered ring that may contain a hetero atom, a 6-membered ring that may contain a hetero atom, a naphthalene ring, a quinoline ring, an isoquinoline ring, an anthracene ring, or an anthraquinone ring and may be substituted with a halogen atom, a nitro group, a cyano group, an alkyl group or an alkoxy group,
• wherein Ra, Rb, Rc, Rd, Re, Rf, Rg, Rh, and Ri each independently represent a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, the methylene moiety of which may be substituted with —O— or —CO—;
• Q represents a single bond or a substituted or unsubstituted alkylene group having 1 to 10 carbon atoms, of which the methylene group may be substituted with —O—, —S—, —CO—, —COO—, —OCO—, —SO2—, —NH—, —CONH—, —NHCO—, —N═CH—, or —CH═CH—;
• and M is as defined above.