化学学报 ›› 1993, Vol. 51 ›› Issue (9): 928-932. 上一篇    下一篇

研究论文

亚碘酰苯氧化单和双(卟啉铁)反应的取代基效应研究

郭灿城;张尚;雷裕武   

  1. 湖南师范大学化学系
  • 发布日期:1993-09-15

Study on the substituent effects of the oxidation of mono-and bisporphinatoiron(Ⅲ) with phio

GUO CANCHENG;ZHANG SHANG;LEI YUWU   

  • Published:1993-09-15

用紫外-可见分光光度分析法测定了PhIO氧化单和双(卟啉铁)两个系列共17个化合物的反应动力学并探讨了取代基的电子效应和立体效应对反应的影响规律.研究结果表明,单铁卟啉系列与PhIO的作用在动力学上的二级反应,而μ 氧代双卟啉铁系列为一级反应.无论是单卟啉铁还是双卟啉铁,反应动力学常数与取代基特性常数σ之间存在线性关系,但是卟啉环上取代基的电子效应对单和双卟啉铁的氧化反应表现出不同的影响规律.

关键词: 氧化, 反应动力学, 苯 P, 碘酸盐, 铁化合物, 空间效应, 开环反应, 取代基效应, 卟啉

The kinetic properties and substituent effects of the oxidns. of 17 mono- and bisporphinatoiron(III) compounds with PhIO are studied by UV-Vis. The results show that the oxidns. are second order for monoporphinatoiron(III), and first order for bisporphinatoiron(III). There are linear relationships between the reaction kinetic constant k and the substituent constant s for mono- and bisporphinatoiron(III), and the electronic effects of the substituents on the porphyrin rings on the oxidation of mono and bisporphinatoiron(III) are different.

Key words: OXIDATION, REACTION KINETICS, BENZENE P, IODATE, IRON COMPOUNDS, STERIC EFFECT, RING CLEAVAGE REACTION, SUBSTITUENT EFFECT, PORPHYRIN

中图分类号: