A Pulse Radiolysis Study of Catalytic Superoxide Radical Dismutation by a Manganese( II ) Complex with an N‐Tripodal Ligand | Zendy

Durot Stéphanie | Zendy; Lambert François | Zendy; Renault JeanPhilippe | Zendy; Policar Clotilde | Zendy

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A Pulse Radiolysis Study of Catalytic Superoxide Radical Dismutation by a Manganese( II ) Complex with an N‐Tripodal Ligand

Author(s) -

Durot Stéphanie,

Lambert François,

Renault JeanPhilippe,

Policar Clotilde

Publication year - 2005

Publication title -

european journal of inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 1434-1948

DOI - 10.1002/ejic.200400834

Subject(s) - chemistry , radiolysis , superoxide , adduct , catalysis , manganese , ligand (biochemistry) , photochemistry , reactivity (psychology) , radical , superoxide radical , enzyme , organic chemistry , biochemistry , receptor , alternative medicine , pathology , medicine

This article presents a pulse radiolysis study of the reactivity of a SOD‐mimic Mn II complex [Mn II (IPG)] + 1 with superoxide. It uses an improved set‐up with a circulating cell. It provides convergent pieces of evidence that 1 catalyses efficiently the dismutation of superoxide. Three sets of experiments are described: (1) Transient formation and decay of an adduct labeled {MnOO} 6 were studied. (2) A multi‐pulse experiment showed a reproducible behaviour upon successive superoxide pulses. (3) Superoxide decay was monitored at 270 nm to provide an overall kinetic constant. A mechanism is proposed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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