Electron-Transfer Processes in the Electrophilic Cleavage of Cobalt-Carbon Bonds of Alkylcobalt(III) Complexes with Iodine

Toshio Tanaka, Shunichi Fukuzumi, Kunio Ishikawa

研究成果: Contribution to journalArticle査読

25 被引用数 (Scopus)

抄録

Contribution of the electron-transfer processes in the cleavage of cobalt-carbon bonds of alkylcobalt(III) complexes cis-[R2Co-(bpy)2]+(R = Me, Et, PhCH2; bpy = 2,2ʹ-bipyridine), trans-[Me2Co(DpnH)] (DpnH = 11-hydroxy-2,3,9,10-tetramethyl-1,4,8,1 1-tetraazaundeca-1,3,8,10-tetraen-1-olate), and [RCo(DH)2py] (R = Me, Et, PhCH2; (DH)2= bis(dimethylglyoximato); py = pyridine) with iodine has been studied by detecting the products that could arise only via electron-transfer processes as well as by the kinetic comparison between the electrophilic reactions of iodine with alkylcobalt(III) complexes and the electron-transfer reactions of iodine with ferrocene derivatives in acetonitrile. The coupling products of alkyl groups of dialkylcobalt(III) complexes, derived from the corresponding dialkylcobalt(IV) complexes, are obtained in the cleavage reactions of dialkylcobalt(III) complexes with iodine, with alkyl iodides being the main products. The observed second-order rate constants for the cleavage reactions of alkylcobalt(III) complexes with iodine in acetonitrile at 298 K are compared with those of electron transfer from ferrocene derivatives to iodine, based on the Marcus theory of electron transfer.

本文言語英語
ページ(範囲)1661-1665
ページ数5
ジャーナルInorganic chemistry
28
9
DOI
出版ステータス出版済み - 5 1 1989
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理化学および理論化学
  • 無機化学

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