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DOI: 10.1039/A607923G (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 2335-2340

Synthesis, electrochemistry and photophysics of ruthenium(II) diimine complexes of 1,1′-bis(diphenylphosphino)ferrocene (dppf[hair space]). Crystal structure of [Ru(bipy)2(dppf[hair space])]2+ (bipy = 2,2′-bipyridine)

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Vivian Wing-Wah Yam, Vicky Wing-Man Lee and Kung-Kai Cheung

Abstract

A series of ruthenium(II) diimine complexes of 1,1′-bis(diphenylphosphino)ferrocene (dppf[hair space]), [Ru(L–L)2(dppf[hair space])]2+ [L–L = 2,2′-bipyridine (bipy), 4,4′-dimethyl-2,2′-bipyridine, 4,4′-di-tert-butyl-2,2′-bipyridine, or 1,10-phenanthroline] have been synthesized and their photophysical properties studied. The crystal structure of [Ru(bipy)2(dppf[hair space])]2+ has been determined. These complexes have been shown to exhibit low-energy emission at ca. 550 nm at 77 K, attributed to a dπ(Ru) → π*(L–L) metal-to-ligand charge transfer triplet excited state. The spectroscopic changes upon oxidation suggest it to occur on the ferrocene moiety.

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