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.

Subject headings

NATURVETENSKAP  -- Kemi -- Organisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Organic Chemistry (hsv//eng)

Keyword

photosynthetic water oxidation

oxomanganese(v) porphyrin

manganese

corroles

compound-i

evolution

spectroscopy

peroxidase

catalysis

Organic chemistry

Publication and Content Type

ref (subject category)

art (subject category)