Intramolecular Electron-transfer Reactions of Ethylenediaminetetra-acetatocobaltate(III) and Its Related Complexes in Solid State
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概要
- 論文の詳細を見る
Electron transfer from a ligand to a central cobalt(III) in solid state was investigated by following the change of the valence state of coblat(III) to cobalt(II). The reaction was carried out in a vacuum as a function of sample amount, temperature and nature of a ligand and an outer-sphere cation. The electron-transfer reaction followed the first-order rate law. An outer-sphere cation had a slight effect on the reaction of the complex ion. The kinetic parameters obtained for potassium ethylenediaminetetraacetatocobaltate(III) (<I>E<SUB>a</SUB></I>=38 kcal/mol, <I>A</I>=10<SUP>14</SUP>) differed greatly from those for potassium propylenediaminetetraacetatocobaltate(III), potassium cyclohexanediaminetetraacetatocobaltate(III) and potassium trimethylenediaminetetraacetatocobaltate(III) (<I>E<SUB>a</SUB></I>\simeq 22 kcal/mol, <I>A</I>\simeq10<SUP>6</SUP>). The kinetic behavior of the pentadentate complex, potassium hydrogen halogenoethylenediaminetetraacetatocobaltate(III), was compared with that of the hexadentate complex, potassium ethylenediaminetetraacetatocobaltate(III).
- 公益社団法人 日本化学会の論文
著者
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Tanaka Nobuyuki
Department Of Botany Kochi Prefectural Makino Botanical Garden
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Nagase Kenzo
Department of Chemistry, College of General Education, Tohoku University
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