クロムー炭素結合を含む錯体[Cr(CH<SUB>2</SUB>OH)(hedtra)]-によるコバルト(III)錯体の還元

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タイトル別名
  • Kinetics of Reduction of Cobalt(III) Complexes by a Chromium(III) Complex Containing Chromium-Carbon Bond [Cr(CH<SUB>2</SUB>OH)(hedtra)]
  • Kinetics of reduction of cobalt(III) complexes by a chromium(III) complex containing chromium-carbon bond (Cr(CH2OH)(hedtra))-.

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説明

N -(2-Hydroxyethyl)ethylenediamine-N, N', N'-triacetato(hydroxymethyl)chromium(III)complex, [Cr(CH2OH)(hedtra)]-, reacts with chloropentaamminecobalt(III) in an aqueous solution to give [Cr(hedtra)(H2O)] and cobalt(II). The reaction proceeded through a biphasic process; (i) formation of an intermediate species and (ii) the decomposition of the intermediate species accompanied by the cleavage of the chromium-carbon bond and the reduction of cobalt(III) to cobalt(II). Kinetic measurements for the second step were made at =1.0 (LiClO4) and 25.0°C. The reaction obeyed the rate law, -d[intermediate]idt={k[H+]/(K+[H+])}[intermediate] and the k and K values were k= (5.1±0.3) × 10-2 s-1 and K= (3.80.3) × 10-5 mol⋅ dm-3.

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