Acta Chimica Sinica ›› 2000, Vol. 58 ›› Issue (10): 1235-1239. Previous Articles     Next Articles

Original Articles

Mn^Ⅲ(TMPyP)-NaOCl体系的反应机理研究

李臻;夏春谷   

  1. 中国科学院兰州化学物理研究所.兰州(730000);中国科学院羰基合成与选择氧 化国家重点实验室
  • 出版日期:2000-10-15 发布日期:2000-10-15

Study for the reaction mechanism of 5Mn^Ⅲ (TMPyP)-NaOCl system

Li Zhen;Xia Chungu   

  1. Lanzhou Inst Chem Phys, CAS.Lanzhou(730000)
  • Online:2000-10-15 Published:2000-10-15

The catalytic reaction kinetics of water-soluble manganese porphrin complex, 5Mn^Ⅲ(TMPyP) with NaOCl of room temperature at different pH has been investigated by the rapid-mixing stopped-flow techniques. The reaction mechanism was proposed. At lower pH values HOCl was the main oxidant and the short-lived intermediate (1) could not be fully formed, whereas the relatively stable intermediate (2) was produced. At higher pH OCl^- was the main oxidant and high-valent oxomanganese (Ⅴ) porphyrin (1) was fully formed, which then decayed to oxoMn(Ⅳ). It was shown by using reducing substrates that the high-valent oxomanganese (Ⅴ) porphyrin was the reactive comlexes.

Key words: MANGANESE COMPLEX, PORPHYRIN, SODIUM HYPOCHLORITE, INTERACTIONS, CATALYTIC REACTION, REACTION MECHANISM, REACTION KINETICS

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