高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (8): 1136.

• 论文 • 上一篇    下一篇

镍(Ⅱ)与meso-四(4-N-甲基吡啶基)卟啉(TMPyP)络合物的伏安法研究

侯建敏, 高小霞   

  1. 北京大学化学系, 北京, 100871
  • 收稿日期:1993-09-29 修回日期:1994-03-30 出版日期:1994-08-24 发布日期:1994-08-24
  • 通讯作者: 高小霞.
  • 作者简介:侯建敏,男,32岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Voltammetric Study on Nickel(Ⅱ) Complex of meso-Tetra-(4-N-methylpyridyl) porphyrin in Aqueous Solution

HOU Jian-Min, GAO Xiao-Xia   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1993-09-29 Revised:1994-03-30 Online:1994-08-24 Published:1994-08-24

摘要: 本文用循环伏安法、溶出伏安法和计时库仑法等多种电化学方法研究了合成的镍(Ⅱ)与meso-四(4-N-甲基吡啶基)卟啉(TMPyP)络合物的电还原行为。结果表明,Ni(Ⅱ)TMPyP的还原过程是中心离子Ni(Ⅱ)和卟啉环同时还原,其中Ni(Ⅱ)被还原为Ni(0),总电子转移数为6.比较并讨论了溶解氧对锰、铁、钴、镍卟啉的不同影响。

关键词: 水溶性镍-卟啉, 溶解氧作用, 伏安法

Abstract: The electrochemical behavior of nickel(Ⅱ)complex of meso-tetra(4-N-methylpyridyl)porphyrin(TMPyP):in aqueous solution has been investigated by cyclic voltammetric, stripping voltammetric and chronocoulometric techniques. Areductive complex wave exhibited at -1.0 V(vs. Ag/AgCl)in ammoniacal buffer solution(pH=9.0) may be attributed to the six-electron transfer reduction of both Ni(Ⅱ) and TMPyPin the complex.It has heen demonstrated that Ni(Ⅱ)in the complex is reduced to Ni(0).It was observed that no significant influence upon the cyclic voltammograms of NiTMPyPby the dissolved oxygen as compared with Mn2+, Fe2+, Co2+ metalloporphrins.

Key words: Water-soluble nickel-porphyrin, Effect of dissolved oxygen, Voltammetry

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