Studies on the Exchange Kinetics of Metal loporphyrin with a Series of Imidazoles by NMR Method

Abstract

Abstract: The exchange rates of axially coordinated imidazoles in mono-ligated iron (Ⅲ) and manganese(Ⅲ) complexes of synthetic porphyrins such as tetraphenylporphyrin (TPP) and te-tramesitylporphyrin(TMP) were measured by NMRmethod.The exchange rate constants and activated parameters were obtained.Two exchange reaction mechanisms were proposed.The influences of metallic ions and temperature on the exchange rates were compared.These results were explained reasonably.The linear relationship of the kinetic parameters was verified.

Key words: Metalloporphyrin, Nuclear magnetic resonace, Exchange reaction, Axial coordination reaction

TrendMD:

ZHU Zhi-Ang, GUO Fu-Chun, RUAN Wen-Juan, CHEN Rong-Ti . Studies on the Exchange Kinetics of Metal loporphyrin with a Series of Imidazoles by NMR Method[J]. Chem. J. Chinese Universities, 1993, 14(9): 1185.

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Studies on the Exchange Kinetics of Metal loporphyrin with a Series of Imidazoles by NMR Method

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