Redox reactions of amidato-bridged cis-diammineplatinum(III) dinuclear complexes with phenol

Shuntaro Hyodo, Masatoshi Kishi, Hiroyuki Fukushima, Satoshi Iwatsuki, Koji Ishihara, Kazuko Matsumoto

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    Abstract

    Kinetic studies of the redox reactions of the head-to-tail (HT) α-pyridonato-bridged cis-diammineplatinum(III) dinuclear complex and of the head-to-head (HH) α-pyridonato-bridged and α-pyrrolidonato- bridged cis-diammineplatinum(III) dinuclear complexes with phenol were performed in acidic aqueous solution. Reduction of the HH Pt III dinuclear complexes with phenol proceeded only at pH > 3, whereas that of the HT Pt III dinuclear complex with phenol proceeded even at a pH as low as zero. The kinetic evaluations revealed that the Pt III dinuclear complexes are not reduced by the phenol molecule but are reduced by the phenoxide ion, and the reduction reaction proceeds through an outer-sphere electron-transfer mechanism.

    Original languageEnglish
    Pages (from-to)5571-5577
    Number of pages7
    JournalEuropean Journal of Inorganic Chemistry
    Issue number33
    DOIs
    Publication statusPublished - 2012 Nov

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    Keywords

    • Amidate
    • Phenol
    • Platinum
    • Reaction mechanisms
    • Redox chemistry

    ASJC Scopus subject areas

    • Inorganic Chemistry

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