Binuclear metal complex and photocatalyst containing the same

摘要

PPROBLEM TO BE SOLVED: To provide a dinuclear metal complex used in a photocatalyst for forming hydrogen by decomposing water and to provide a photocatalyst containing the same. PSOLUTION: The dinuclear metal complex containing a specified hexapyridylosmium diphosphine rhodium prepared by the following preparative method. A hexafluorophosphate of bis(5-bromo-2,2':6',2"-terpyridyl) osmium (II) and phenylboronic acid pinacol ester having a phosphinothioyl group are cross-coupled in the presence of a palladium catalyst to obtain the corresponding phosphine sulfide. Next, the phosphine sulfide is reacted with raney nickel to obtain a diphosphine ligand having an Os(tpy)2 moiety. Next, the obtained diphosphine ligand, a transition metal complex, e.g., chlorodicarbonylrhodium (I) dimer [RhCl(CO)SB2/SB]SB2/SBare mixed in a suitable solvent at room temperature to obtain the objective dinuclear metal complex. PCOPYRIGHT: (C)2010,JPO&INPIT