高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (9): 1442.

• 论文 • 上一篇    下一篇

阴离子存在下(OEP)MG(Ⅱ)的电化学氧化机理研究

王振新1, 刘殿骏1, 林祥钦2   

  1. 1. 中国科学院长春应用化学研究所电分析化学开放研究实验室, 国家光谱与电化学分析研究中心, 长春 130022;
    2. 中国科学技术大学化学系, 合肥 230026
  • 收稿日期:1998-08-31 出版日期:1999-09-24 发布日期:1999-09-24
  • 通讯作者: 王振新,男,27岁,博士研究生.
  • 作者简介:王振新,男,27岁,博士研究生.
  • 基金资助:

    中国科学院长春应用化学研究所电分析化学开放实验室研究资助

A Mechanistic Study of Electrochemical Oxidation Processes of (OEP)Mg(Ⅱ) in the Presence of Anions

WANG Zhen-Xin1, LIU Dian-Jun1, LIN Xiang-Qin2   

  1. 1. Laboratory of Electroanalytical Chemistry and National Analytical and Research Center of Electrochemistry and Spectroscopy, Changchun Institute of Applied Chemistry, Chinese Academp of Sciences, Changchun 130022;
    2. Department of Chemistry, Chinese University of Science arid Technology, Hefei 230026, China
  • Received:1998-08-31 Online:1999-09-24 Published:1999-09-24

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摘要： 用电化学滴定和现场光谱电化学方法研究考察了DCE中OH-,F-和Cl-等阴离子存在下的(OEP)Mg(Ⅱ)的电极氧化过程.发现阴离子能与(OEP)Mg(目)轴向配位,形成五配位化合物,从而引起(OEP)Mg(Ⅱ)的氧化峰电位的负移;在生成二价环阳离子的过程中伴随后行化学反应.获得了反应产物的氧化还原峰电位.

关键词: 电化学滴定, 光谱电化学, 镁卟啉, 轴向配位

Abstract: In the presence of F-, OH-, Cl-, electrochemical redox of (OEP)Mg(Ⅱ) [2,3,7, 8, 12, 13, 17, 18 octaethy1-21H, 23H-porphine magnesium (Ⅱ)] are investigated in DCE/0.1 mol/Lsolution by cyclic votammetry and spectroelectrochemistry.In the presence of anions, anions are axially coordinated to (OEP)Mg(Ⅱ) generate (OEP)Mg(Ⅱ)Y, the E1/2of (OEP)Mg(Ⅱ)Yoxidation are negatively shifted.Achemical reaction following the second oxidation step is observed, the E1/2of the reaction product is obtained.Mechanism of (OEP)Mg(Ⅱ) in the halogen and OH-anions titration process has been proposed.

Key words: Electrochemistry titration, Spectroelectrochemistry, Magnesium porphyrin, Axial coordination

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