A new valence tautomerism example in an electroactive ferrocene substituted triphenylmethyl radical

J Am Chem Soc. 2003 Feb 12;125(6):1462-3. doi: 10.1021/ja0282590.

Abstract

A new molecular system combining an open-shell organic radical that acts as an acceptor group, different from an o-quinone moiety, covalently linked to a ferrocene moiety, acting as the donor group, is shown to exhibit valence tautomerism.