中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (2): 44-47.

• 研究论文 • 上一篇    下一篇

非水溶剂中铁酞菁的“in-situ”可见紫外光谱电化学

刘宇1, 林祥钦2   

  1. 1. 抚顺石油学院应用化学系 抚顺113001;
    2. 中国科技大学化学系 合肥
  • 收稿日期:1997-07-14 修回日期:1997-11-17 出版日期:1998-04-10 发布日期:1998-04-10
  • 基金资助:
    国家自然科学基金

in-situ UV-visible Spectroelectrochemical Studies of Ironphthalocyanine in Non Aqueous Solvents

Liu Yu1, Lin Xiangqin2   

  1. 1. Department of Applied Chemistry Fushun Petroleum Institute, Fushun 113001;
    2. Department of Chemistry, China University of Science and Technology, Hefei
  • Received:1997-07-14 Revised:1997-11-17 Published:1998-04-10 Online:1998-04-10

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摘要： 用循环伏安与现场可见紫外光谱电化学方法研究了氯化4-特丁基苯氧基铁酞菁[(TbPc)Fe(Ⅲ)Cl]电化学行为。结果表明,在四氢呋喃溶剂中其正电位区经历了两步氧化过程,对应于Fe(Ⅲ)/Fe(Ⅳ)以及Fe(Ⅳ)/阳离子自由基的生成反应,负电位区还原过程经历了Fe(Ⅲ)/Fe(Ⅱ),Fe(Ⅱ)/Fe(Ⅰ)和Fe(Ⅰ)/阴离子自由基生成的3个步骤,阐述了配位效应对氧化还原机理的影响。指出Fe(Ⅳ)不寻常价态的出现,是阴离子Cl-的轴向配位对超常价态起到稳定作用的结果。

关键词: 铁酞菁, 现场薄层光谱电化学

Abstract: Cyclic voltammetry and in-situ UV-Visible spectroelectrochemical behavior of (TbPc)Fe(Ⅲ)Cl, (TbPc)Fe(Ⅲ)ClO4 and (TbPc)Zn(Ⅱ) are reported. Five redox steps of Fe(Ⅳ)/radical cation, Fe(Ⅳ)/Fe(Ⅲ), Fe(Ⅲ)/Fe(Ⅱ), Fe(Ⅱ)/Fe(Ⅰ) and Fe(Ⅰ)/radical anion in THF were observed. The existence of un usual oxidation state of Fe(Ⅳ) is attributed to the axial coordination of Cl- anion. A mechanism for the redox reactions has been proposed.

Key words: iron phthalocyanine, in-situ spectroelectrochemistry

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