高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (7): 1016.

• 论文 • 上一篇    下一篇

邻苯二酚衍生物与稀土元素配位反应的研究(Ⅴ)--3,4-二羟基苯甲酸与铈(Ⅲ)的配位与转型反应

邓建成, 朱美香, 钟超凡, 童珏   

  1. 湘潭大学化学化工学院, 湘潭, 411105
  • 收稿日期:1997-08-08 出版日期:1998-07-24 发布日期:1998-07-24
  • 通讯作者: 邓建成,男,49岁,硕士,副教授.
  • 作者简介:邓建成,男,49岁,硕士,副教授.

The Coordination of Rare Earth Elements with Derivatives of Catechol(Ⅴ) The Coordination and Transformation Reaction of Cerium with 3,4-Dihydroxybenzoic Acid

DENG Jian-Cheng, ZHU Mei-Xiang, ZHONG Chao-Fan, TONG Jue   

  1. College of Chemistry and Chemical Engineering, Xiangtan University, Xiangtan, 411105
  • Received:1997-08-08 Online:1998-07-24 Published:1998-07-24

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摘要： 研究了稀土元素铈(Ⅲ)离子与3,4-二羟基苯甲酸(H3L)在水溶液体系中生成羧基配位化合物的条件,表征其组成为Ce(H2L)2(OH)·3H2O,并研究了该配合物在一定条件下,铈离子由羧基配位反应变为由两个邻酚羟基配位的配合物[Ce(HL)n]的转型反应及氧化成铈(Ⅳ)配合物的反应。

关键词: 铈, 3, 4-二羟基苯甲酸, 配位反应, 转型反应, 氧化反应

Abstract: The complex of cerium(Ⅲ) with 3,4-dihydroxybenzoic acid was prepared in aqueous solution of pH=5.6～9.0, and the formula Ce(H2L)2(OH)·3H2O was determined by means of IR, TG-DTA and elementary analysis. In alkaline aqueous solution, the cerium cation of the complex can be transformed from carboxyl group to dihydroxyl group in the same ligand and formed a new chalation compound.

Key words: Cerium, 3,4-Dihydroxybenzoic acid, Coordination reaction, Transformation reaction, Oxidation

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