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电化学(中英文) ›› 1999, Vol. 5 ›› Issue (4): 406-411. 

• 研究论文 • 上一篇    下一篇

铈(Ⅲ)氨基酸咪唑三元配合物的表征和循环伏安行为研究

吴惠霞,王则民,杨海峰,章宗穰   

  1. 上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234,上海师范大学化学系!上海200234
  • 收稿日期:1999-11-28 修回日期:1999-11-28 出版日期:1999-11-28 发布日期:1999-11-28

Characterization and Electrochemical Behaviour of Ce(Ⅲ) Amino Acid Imidazole Ternary Complexes

Wu Huixia * Wang Zemin Yang Haifeng Zhang Zongrang   

  1. (Dept.of Chem.,Shanghai Normal Univ.,Shanghai 200234
  • Received:1999-11-28 Revised:1999-11-28 Published:1999-11-28 Online:1999-11-28

摘要: 合成了铈( Ⅲ)_色氨酸_咪唑和铈( Ⅲ)_苯丙氨酸_咪唑三元配合物,对配合物进行了元素分析、摩尔电导测试、热重_差热分析及红外光谱分析,确定了配合物的组成和成键特征,并用循环伏安法研究了铈( Ⅲ) 离子、铈(Ⅲ) 与氨基酸及咪唑混合溶液、铈( Ⅲ) 二元及三元配合物在玻碳电极上的电化学行为.实验结果表明,在- 0-10 ~1-10 V(vs.SCE) 电位扫描范围内,两种铈(Ⅲ) 三元配合物显示了完全不可逆的电子迁移过程

关键词: 铈(Ⅲ), 三元配合物, 表征, 电化学行为

Abstract: Two Ce(Ⅲ)_amino acid_imidazole teranry complexe were synthesized,These complexes have the composition of Ce(Trp) 3IM(NO 3) 3·3H 2O and Ce(Phe) 3IM(NO 3) 3 respectively. The IR spectra indicate that the carboxy group of amino_acid and the N atoms of imidazole are coordinated with Ce(Ⅲ) ion.Cyclic voltammetry was used to study the electrochemical behaviour of Ce(Ⅲ) ion,the mixture of Ce(Ⅲ) with ligands,and Ce(Ⅲ) binary or ternary complexes. Within the scan range of -0.1 to 1.10 V (vs.SCE),both of ternary complexes depicted completely irreversible electron transfer process.

Key words: Ce(Ⅲ), Ternary complex, Electrochemical behaviour

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