中华医学超声杂志

应用化学 ›› 1996, Vol. 0 ›› Issue (3): 20-24.

• 研究论文 • 上一篇    下一篇

溴离子存在下八乙基钴(Ⅱ)卟啉电氧化过程的电化学和光谱电化学

严川伟, 林祥钦   

  1. 中国科学院长春应用化学研究所电分析化学开放实验室, 国家电化学和光谱研究分析中心 长春 130022
  • 收稿日期:1995-08-21 修回日期:1995-11-30 出版日期:1996-06-10 发布日期:1996-06-10

Electrochemical and Spectroelectrochemical Studies on the Electrooxidation of(OEP)Co(Ⅱ)in the Presence of Bromide Anions

Yan Chuanwei, Lin Xiangqin   

  1. National Analytical Research Center of Electrochemistry and Spectroscopy, Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1995-08-21 Revised:1995-11-30 Published:1996-06-10 Online:1996-06-10

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摘要： 用循环伏安和现场薄层光谱电化学方法研究了溴离子对1,2-二氯乙烷中八乙基钴(Ⅱ)卟啉[(OEP)Co(Ⅱ)]电极氧化过程的影响,结果显示溴离子可以与(OEP)Co(Ⅱ)及其三步单电子氧化产物发生1:1或2:1的配位反应.估测出各轴向配合物的稳定常数,给出了溴离子存在下(OEP)Co(Ⅱ)电极氧化还原过程的机制.

关键词: 溴离子, 八乙基钴卟啉, 电氧化, 电化学, 光谱电化学

Abstract: The investigation of the electrooxidation processes of(OEP)Co(Ⅱ)was carried out utilizing cyclic voltammetry(CV),electrochemical CV titration and in-situ thin-layer UV-Visible spectroelectrochemistry in 1,2-dichloroethane solution.It was indicated that Br can coordinate axially with(OEP)Co(Ⅱ)and three one-electron oxidation steps lead(OEP) Co(Ⅱ)to the formation of five-or six-dentate coodination species.The formation constants of these species were estimated.The electrooxidation mechanism of(OEP)Co(Ⅱ)in the presence of Br~-anions was given.

Key words: bromide anion, eobaltous oetaethylporphyrin, electrooxidation, electrochemistry, spectroelectrochemistry

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