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Water Oxidation Catalyzed by a Dinuclear Mn Complex: A Functional Model for the Oxygen-Evolving Center of Photosystem II

Authors

  • Allan K. Poulsen,

    1. Departments of Chemistry, and Biochemistry and Molecular Biology, University of Southern Denmark, Main Campus: Odense University, Campusvej 55, 5230 Odense M, Denmark, Fax: (+45) 6615-8780
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  • Annette Rompel Dr.,

    1. Departments of Chemistry, and Biochemistry and Molecular Biology, University of Southern Denmark, Main Campus: Odense University, Campusvej 55, 5230 Odense M, Denmark, Fax: (+45) 6615-8780
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  • Christine J. McKenzie Dr.

    1. Departments of Chemistry, and Biochemistry and Molecular Biology, University of Southern Denmark, Main Campus: Odense University, Campusvej 55, 5230 Odense M, Denmark, Fax: (+45) 6615-8780
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  • This work was supported by Danish Technical and Natural Science Research Council.

Abstract

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A highly specific and catalytic oxidation of water occurs when using a dinuclear Mn complex of a mononegative carboxylate-containing pentadentate ligand (see scheme). Isotope-labeling experiments coupled with membrane inlet mass spectrometry show that one oxygen atom in the evolved O2 molecule is derived from water and the other from the oxidant.

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