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Electron-Transfer Properties of an Efficient Nonheme Iron Oxidation Catalyst with a Tetradentate Bispidine Ligand

Authors

  • Peter Comba Prof. Dr.,

    1. Universität Heidelberg, Anorganisch-Chemisches Institut, INF 270, 69120 Heidelberg (Germany), Fax: (+49) 6226-546-617
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  • Shunichi Fukuzumi Prof. Dr.,

    1. Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST (Japan) Science and Technology Agency (JST), Suita, Osaka 565-0871 (Japan)
    2. Department of Bioinspired Science, Ewha Womans University, Seoul 120-750 (Korea), Fax: (+81) 6-6879-7370
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  • Hiroaki Kotani Dr.,

    1. Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST (Japan) Science and Technology Agency (JST), Suita, Osaka 565-0871 (Japan)
    2. Department of Bioinspired Science, Ewha Womans University, Seoul 120-750 (Korea), Fax: (+81) 6-6879-7370
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  • Steffen Wunderlich

    1. Universität Heidelberg, Anorganisch-Chemisches Institut, INF 270, 69120 Heidelberg (Germany), Fax: (+49) 6226-546-617
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  • Financial support by the German Science Foundation (DFG) and a Grant-in-Aid (No. 19205019) from the Ministry of Education, Culture, Sports, Science and Technology (Japan), are gratefully acknowledged.

Abstract

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The oxidation catalyst [(L)FeIV[DOUBLE BOND]O] (see picture; L is a tetradentate bispidine ligand) has the highest known one-electron reduction potential for a FeIV[DOUBLE BOND]O species (0.73 V vs. SCE). Investigations into the electron-transfer kinetics show a linear correlation with the bond dissociation energy of the organic substrates.

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