Journal of the American Chemical Society, Vol.131, No.25, 8726-8726, 2009
Nucleophilic Attack of Hydroxide on a Mn-V Oxo Complex: A Model of the O-O Bond Formation in the Oxygen Evolving Complex of Photosystem II
A manganese(III) corrole complex, 1, has been synthesized and used to study a potential mechanism for oxidation of water to molecular oxygen. Oxidation by t-BuOOH gave the Mn-V=O complex 2. Addition of hydroxide Led to release of oxygen via the Mn-IV complex 4 and regeneration of complex 1. It could be shown that the oxygen from O-18-labeted water was incorporated in both the formed molecular oxygen and the peroxy intermediate 4.