Interaction of Some Lewis Acids with the Oxide-Bridge of (μ-Oxo)di(μ-acetato)diruthenium (III, III) Complexes and Its Electrochemical Consequence

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  • INOMATA Tomohiko
    Division of Chemistry, Graduate School of Science, Hokkaido University
  • UMAKOSHI Keisuke
    Division of Chemistry, Graduate School of Science, Hokkaido University
  • SASAKI Yoichi
    Division of Chemistry, Graduate School of Science, Hokkaido University

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タイトル別名
  • Interaction of Some Lewis Acids with the oxide-Bridge of ミュー oxo di ミュー acetato diruthenium III IIIComplexes and Its Electrochemical Consequence

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<p>Interaction of some Lewis acids to the oxide bridge of [Ru2(μ-O)(μ-CH3COO)2(2,2'-bipyridine)2(L)2]2+ (L = 1-methylimidazole (1), pyridine (2)) and its electrochemical consequence were examined. The complexes themselves show reversible Ru2(III, III / III, IV) and Ru2(II, III / III, III) processes and an irreversible Ru2(II, II / II, III) process in acetonitrile (0.1 M n-Bu4NPF6) at 0.78 (0.95) (E1/2), −0.55 (−0.39) (E1/2) and −1.16 (−1.09) V (Epa) vs. Ag/ AgCl, respectively, for 1 (data in parentheses are for 2). On addition of BF3 and Al3+, all the redox potentials shift to the positive direction. Addition of Li+ and Na+ causes the shift of only the most negative El/2 to overlap with the middle one to show an apparent one-step two-electron process Ru2(II, II / III, III) at −0.55 V. BF3 and Al3+ interact with the oxide bridge of the complexes at the oxidation states Ru2 (III, III), (II, III) and (II, II) while the alkali metal ions do only at the Ru2(II, II) state.</p>

収録刊行物

  • Electrochemistry

    Electrochemistry 67 (5), 427-430, 1999-05-05

    公益社団法人　電気化学会

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