高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 532.

• 论文 • 上一篇    下一篇

[5,10,15,20]-四取代苯基卟啉氯化锰配合物紫外-可见光谱的研究

李松兰, 廖代正, 梁树森, 周一鸣, 朱申杰   

  1. 南开大学化学系, 天津, 300071
  • 收稿日期:1993-04-21 修回日期:1994-01-03 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 李松兰,女,53岁,副教授.
  • 作者简介:李松兰,女,53岁,副教授.

Studies on UV-Vis Spectra of [5,10,15,20]-Substituted Tetrakisphenyl Porphyrin Chlorated Manganese Complexes

LI Song-Lan, LIAO Dai-Zheng, LIANG Shu-Sen, ZHOU Yi-Ming, ZHU Shen-Jie   

  1. Department of Chemistry, Nankai University, Tianjin, 300071
  • Received:1993-04-21 Revised:1994-01-03 Online:1994-04-24 Published:1994-04-24

摘要: 测定了18个新合成的四取代苯基卟啉氯化锰的紫外-可见光谱,对主要吸收峰作了归属,指定了CT带,研究了样品在四氢呋喃溶剂中220nm附近吸收带的浓度效应和在四氢呋喃、三氯甲烷、二氯甲烷、乙醇中的溶剂效应及取代基效应。结果表明,除o-Me、p-Ⅰ取代苯基卟啉锰外,220nm附近吸收带随测试溶液浓度增加,λmax红移;随测定溶剂极性(p值)增加,λmax蓝移。

关键词: 紫外光谱, CT带, 浓度效应

Abstract: The UV-Vis spectra of eighteen [5, 10, 15, 20]-Substituted tetrakisphenyl porphyrin manganese chlorated complexes have been measured and their main bands were assigned.The concentration and solvent effects have also been studied which indicate that the Pπ(Cl)→π* bands undergo a gradual red shift as the concentration of the solution increases and a blue shift as the polarity of the solvent increases.Based on the dipole-dipole interaction with polar solvent, these effects can be understood by realizing that in Pπ(Cl)-π* transitions the ground state is more polar than the excited state.In addition, the linear relation between the λmax values of p-substituted phenyl porphyrints and Hammett constant has been observed.

Key words: UV-Vis spectra, CT band, Concentration effect

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