| 摘要 |
A dithiolate metal complex compound having formula [I] <IMAGE> [I] wherein each R individually represents an alkyl group having 1 to 6 carbon atoms, a halogen, a halogenated alkyl group having 1 to 6 carbon atoms, an amino group which may be substituted with 1 or 2 alkyl groups each having independently 1 to 4 carbon atoms, or a trifluoromethyl group, M represents a transition metal selected from the group consisting of Ni, Pd, Pt, Co, Cu and Mn, n is an integer of 0 to 4, and A represents the counter cation of the complex compound, a method of producing the same, and an optical information recording medium comprising a recording layer comprising a polymethine dye and the dithiolate metal complex compound are disclosed.
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