物理化学学报 >> 1991, Vol. 7 >> Issue (04): 456-461.doi: 10.3866/PKU.WHXB19910415

研究论文 上一篇    下一篇

对位取代四苯基卟啉铜(II)的生成动力学及其它金属离子的影响

朱志昂; 夏新; 陈荣悌   

  1. 南开大学化学系,天津 300071
  • 收稿日期:1990-03-10 修回日期:1991-02-01 发布日期:1991-08-15
  • 通讯作者: 朱志昂

Kinetics of the Formation of (Para-Substituted Tetraphenylporphinato)-Copper(II) and the Catalytic Effect of Other Matal Ions

Zhu Zhi-Ang; Xia Xin; Chen Rong-Ti   

  1. Department of Chemistry, Nankai University, Tianjin 300071
  • Received:1990-03-10 Revised:1991-02-01 Published:1991-08-15
  • Contact: Zhu Zhi-Ang

摘要: 本文用Shimadzu UV-240紫外可见分光光度计对Cu(Ⅱ)与对位取代四苯基卟啉H_2(p-X)TPP(X=NO_2, (Cl,H,CH_3,OCH_3)在二甲亚砜溶剂中的生成动力学及镉(Ⅱ)离子对该反应的催化作用进行了系统研究, 提出了反应机理, 并观察了Hg(Ⅱ)、Pb(Ⅱ)等其它金属离子对此反应的影响。发现反应速率常数及平衡常数与Hammett取代常数σ值之间呈现良好的直线自由能关系。

关键词: 对位取代四苯基卟啉铜(II), 生成动力学, 机理

Abstract: The kinetics of formation reaction of Copper(Ⅱ) with para-substituted tetraphenylporphyrin H_2(p-X)TPP (X=NO_2,Cl,H, CH_3,OCH_3) in dimethyl sulfoxide solution and the catalytic effect of Cadmium(Ⅱ) ion have been studied on Shimadru UV-240 spectrophotometer. The mechanisms were proposed and the effect of Hg(Ⅱ), Pb(Ⅱ) on this reaction was investigated. Good LFER (linear free energy relationahips) between reaction rate constant/equilibrium constant with the Hammett subtituent constant σ have been ob served in certain cases.

Key words: (Para-substituted tetraphenylporphinato)-Copper(II), Kinetics of formation Mechanisms