Evidence for the photochemical formation of a high-valent 2A2u antimony porphyrin π-radical cation

Abstract

Irradiation of [Sb-V(tpp)(OH)(2)](+) (tpp = dianion of 5,10,15,20-tetraphenylporphyrin) at 298 K in argon saturated dichloromethane under steady state conditions results in the formation of the highly oxidising pi-radical cation [Sb-V(tpp)(OH)(2)](2+) with spectral characteristics corresponding to a (2)A(2u) electronic ground state. (C) 2000 Elsevier Science S.A. All rights reserved.