物理化学学报 >> 1997, Vol. 13 >> Issue (04): 335-343.doi: 10.3866/PKU.WHXB19970410

研究论文 上一篇    下一篇

锌、镉及汞卟啉生成反应动力学研究

阮文娟,朱志昂,林华宽,陈正华,陈红卫,杨秀檩,邵迎,陈荣悌   

  1. 南开大学化学系，天津 300071
  • 收稿日期:1996-09-03 修回日期:1996-12-16 发布日期:1997-04-15
  • 通讯作者: 朱志昂

Kinetic Studies on the Formation Reaction of Zinc(II)、Cadmium(II) and Mercury(II) with Porphyrins

Ruan Wen-Juan,Zhu Zhi-Ang,Lin Hua-Kuan,Chen Zheng-Hua,Chen Hong-Wei,Yang Xiu-Lin,Shao Ying,Chen Rong-Ti   

  1. Department of Chemistry,Nankai University,Tianjin 300071
  • Received:1996-09-03 Revised:1996-12-16 Published:1997-04-15
  • Contact: Zhu Zhi-Ang

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摘要：

对四-间甲基-苯基卟啉H2T(m－CH3)PP与Zn（Ⅱ）、Cd（Ⅱ）、Hg（Ⅱ）在丙酮中、四苯基卟啉H2TPP与Zn（Ⅱ）在丙酮和DMF中的生成反应动力学进行了研究. 根据我们的实验结果和对前人工作的总结，提出了较为合理的反应机理，用非线性拟合的方法求得各基元步骤的动力学参数. 合理解释了锌、镉、汞卟啉生成反应体系的区别，探讨了温度和溶剂对该反应体系的影响.

关键词: 卟啉, 生成反应动力学, 反应机理, 反应速率, 停流法

Abstract:

The kinetics of formation reaction of Zn(Ⅱ)、 Cd(Ⅱ)、 Hg(Ⅱ) with metamethyl tetraphenylporphyrin (H2T(m-CH3)PP) in acetone and Zn(Ⅱ) with tetraphenylporphyrin (H2TPP) in acetone or in DMF have been studied. A general mechanism was proposed and the kinetic parameters were obtained by non-linear least-squares program. The different behavior of the reaction system of Zn(Ⅱ)、 Cd(Ⅱ)、 Hg(Ⅱ) have been interpreted reasonably. The effects of temperature and solvent on the reaction rate were also investigated in this paper.

Key words: Porphyrins, Kinetics of formation reaction, Mechanism of reaction, Reaction rate, Stopped-flow