Binuclear Metal Complex, Metal Complex Dye, Photoelectric Conversion Element, and Photochemical Battery

摘要

A novel binuclear metal complex according to the present invention is an asymmetric binuclear metal complex represented by the general formula: (L¹)₂M¹(BL)M²(L²)₂(X)_n, wherein M¹ and M², which may be identical or different, represent a transition metal; L¹ and L², which are different, represent a chelate ligand capable of polydentate coordination and two L¹s may be different and two L²s may be different; BL represents a bridge ligand having at least two heteroatom-containing cyclic structures, the heteroatoms contained in the cyclic structures being ligand atoms coordinating to M¹ and M²; X represents a counter ion; and n is the number of counter ions needed to neutralize the charge of the complex. And the binuclear metal complex is useful as a metal complex dye.