Syntheses of a 6-(2-pyrrolyl)-2,2′-bipyridine derivative and its ruthenium complex

Syntheses of a new planar terdentate ligand, 6-(3,5-diphenyl-2-pyrrolyl)-2,2 -bipyridine ((LH)-H-1) and its ruthenium(II) complex ([Ru(L-1)(2)]) are reported. The X-ray structure of [Ru(L-1)(2)] showed the distorted octahedral Ru(II) center similar to the structures of terpyridine complexes. The cyclic voltammograms revealed that [Ru(L-1)(2)] was more easily oxidized than [Ru(terpy)(2)](2+) by 1.10V.