高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 558.

• 论文 • 上一篇    下一篇

μ-氧代双锰(Ⅲ)卟啉氧化反应及取代基效应研究

郭灿城, 丁亮中, 梁本熹, 陈新斌   

  1. 湖南大学化学化工系, 长沙 410082
  • 收稿日期:1995-05-29 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 郭灿城,男,38岁,教授.
  • 作者简介:郭灿城,男,38岁,教授.
  • 基金资助:

    国家自然科学基金

Studics on the Oxidation of μ-Oxo-bis (manganese(Ⅲ)porphyrin)Complexes and Substituted Effect

GUO Can-Cheng, DING Liang-Zhong, LIANG Ben-Xi, CHEN Xin-Bin   

  1. Department of Chernistry and Chemistry Engineering, Hunan University, Changsha 410082
  • Received:1995-05-29 Online:1996-04-24 Published:1996-04-24

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摘要： 用紫外-可见光谱对氧化剂PhIO、H2O2和空气对μ-氧代双四苯基卟吩合锰([TPP·Mn(Ⅲ)]2O)的氧化过程进行监测,揭示了[TPPMn(Ⅲ)]2O在不同氧化剂作用下具有不同的反应过程。研究了8种取代μ-氧双四苯基卟吩合锰{[TXPPMn(Ⅲ)]2O,X=p-(i-Pr),p-CH3,p-Cl,p-F,p-OCH3,H,m-Cl,o-Cl}与H2O2反应中的取代基效应和溶剂效应。结果表明:上述反应为卟啉环上的吸电子基所促进;且反应速率随着反应溶剂的亲核性能的增加而增加。

关键词: 卟啉, 氧化反应, 取代基效应, 溶剂效应

Abstract: The oxidation of μ-oxo-bis(tetraphenylporphinatomanganese) [TPPMn (Ⅲ)]2O with the oxidants such as PhIO.H2OO and air is studied.The amounts of [TPPMn(Ⅲ)]2O in the reaction system is shown by monitoring the reaction with UV-Vis spectrum instrument.The different mechanisms may be presented when [TPPMn(Ⅲ)]2Oreacted with different oxidants.The substituent effect and solvent effect in the reactions of the substitutedμ-oxo-bis (manganeseporphyrin)[TXPPMn (Ⅲ)]2O (X=p-(i-Pr),P-CH3,p-Cl, P-F,P-OCH3,H,m-Cl,o-Cl) with H2O2 are also studied.The research results show that abovereaction is accelerated by both electrondrawing substituents on porphyrin ring and nucleophilicity of solvents.

Key words: Porphyrin, Oxidation, Substituent effect.Solvent effect

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