Photocatalytic Properties and Electronic Effects of Incorporation Bis(acetylacetonato) Ruthenium(II/III) Complexes with Bidentate Nitrogen and Sulfur Ancillaries

摘要

Treatment of cis-Ru(acac)(2)(CH3CN)(2) (acac(-)=acetylacetonate) with 1.5 equiv. of corresponding bidentate nitrogen and sulfur ligands in ethanol gave a series of bis(acetylacetonato) ruthenium(II/III) complexes (acac)(2)Ru(dimbpy)(PF6) (dimbpy=4,4 '-dimethyl-2,2 '-bipyridine) (1), (acac)(2)Ru(phen) (phen=o-phenanthroline) (2), (acac)(2)Ru(opd) (opd=o-phenylenediamine) (3), (acac)(2)Ru(4-Bropd) (4-Bropd=4-bromo-o-phenylenediamine) (4) and (acac)(2)Ru(S2CNMe2) (5), respectively. Complexes 1-5 were characterized by FT-IR, NMR and UV-Vis spectroscopies along with their electrochemical properties. The structures of complexes 1-5 have been unambiguously established by single crystal X-ray crystallography. The photocatalytic properties for hydrogen production by water splitting of complexes 1-5 under visible light (lambda>420 nm) were also investigated in the paper.