Deactivation of biacetyl triplets by cyanocobaltate(III) complexes

Abstract

The rate of electronic energy transfer from biacetyl triplets to Co(CN)_(5)(X)^(n–)(X = CN^–, MeCN, pyridine, N_(3)^–, H_(2)O, or SCN^–) is strongly dependent on the energy of the first spin-allowed d–d transition of Co(CN)_(5)(X)^(n–), and (for X = CN^–, N_(3)^–, and SCN^–) the direct and sensitized photosubstitution yields are the same, implying a common reactive state.

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