4.8 Article

Nucleophilic Attack of Hydroxide on a MnV Oxo Complex: A Model of the O-O Bond Formation in the Oxygen Evolving Complex of Photosystem II

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 131, Issue 25, Pages 8726-+

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja901139r

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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.

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