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Water Oxidation Catalyzed by Strong Carbene-Type Donor-Ligand Complexes of Iridium

Authors

  • Dr. Ralte Lalrempuia,

    1. School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4 (Ireland), Fax: (+353) 1716-2501
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  • Dr. Neal D. McDaniel,

    1. Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213 (USA)
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  • Dr. Helge Müller-Bunz,

    1. School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4 (Ireland), Fax: (+353) 1716-2501
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  • Prof. Stefan Bernhard,

    Corresponding author
    1. Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213 (USA)
    • Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213 (USA)
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  • Prof. Dr. Martin Albrecht

    Corresponding author
    1. School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4 (Ireland), Fax: (+353) 1716-2501
    • School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4 (Ireland), Fax: (+353) 1716-2501
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  • This work was financially supported by the European Research Council (ERC-StG 208561) and Science Foundation Ireland. S.B. acknowledges support through an NSF CAREER award (CHE-0949238). We thank Prof. O’Neill (UCD) for electrochemical analyses.

Abstract

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Think oxygen: Iridium(III) complexes containing an unusually bound chelating triazolylidene ligand (see picture) show excellent activity towards water oxidation, producing hundreds of milliliters or O2 per milligram of iridium. The active catalysts include either an ylide or an unusually bound pyridylidene as the chelating L group and are readily accessible by click chemistry.

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