高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (6): 569.

• 研究论文 • 上一篇    下一篇

铕(Ⅲ)-邻菲罗啉极谱催化前波的机理研究

高小霞, 胡涛   

  1. 北京大学化学系
  • 收稿日期:1989-01-04 出版日期:1990-06-24 发布日期:1990-06-24
  • 通讯作者: 高小霞
  • 基金资助:

    国家自然科学基金

Studies on the Mechanism of the Catalytic Prewave of Eu( Ⅲ )-o-Phcnanthroline

Gao Xiaoxia, Hu Tao   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1989-01-04 Online:1990-06-24 Published:1990-06-24

PDF (PC)

被引次数

18

摘要： 本文用交流极谱、脉冲极谱、循环伏安法以及紫外吸收光谱等多种实验手段,研究并提出了铕(Ⅲ)-邻菲罗啉催化前波是配位体架桥的反应机理。

关键词: 极谱催化前波, 铕(Ⅲ)-邻菲罗啉, 配体架桥机理

Abstract: The polarographic catalytic prewaves of metal complexes have been used successfully for determining small quantities of non-electroactive species, an outstanding example for the determination of metals is the AC polarography of Eu-v-phenanthroline. The reaction mechanism of this prewave are examined by many electrochemical experiments such as AC polarography, differential pulse polarography, electrocapillary curves, cyclic voltammetry, etc. A ligand-bridge mechanism is then suggested in comparison with the formation of electroactive complexes in the case of Co ( Ⅱ ) or Ni ( Ⅱ ) with o-phenanthroline.

Key words: Catalytic prewave, Eu( Ⅲ )-o-phenanthroline, Ligand-bridge mechanism

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