Bis(dithiolene) Molybdenum Complex that Promotes Combined Coupled Electron–Proton Transfer and Oxygen Atom Transfer Reactions: A Water‐Active Model of the Arsenite Oxidase Molybdenum Center

Combined CEPT (coupled electron–proton transfer)/OAT (oxygen atom transfer) reactions were accomplished in (Bu4N)2[MoIVO(bdtCl2)2] (1) and (Bu4N)2[MoVIO2(bdtCl2)2] (2) complexes in aqueous media. The reaction mechanism of the CEPT reaction was analyzed electrochemically and the conversion of 1 to 2 was revealed to proceed by a two-proton two-electron oxidative process. The structural and reaction profiles provide a new model for the arsenite oxidase catalytic center. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)

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