N. V. Chizhova, S. V. Zvezdina, A. E. Likhonina, N. Zh. Mamardashvili, O. I. Koifman
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引用次数: 0
Abstract
Mn(III)-5-(4-nitrophenyl)-10,15,20-triphenylporphyrin and Mn(III)-5,10,15-tri(4-nitrophenyl)-20-phenylporphyrin were synthesized by complex formation reactions of the specified porphyrins and by metal exchange of Cd porphyrin complexes with MnCl2 in dimethylformamide. The products were identified by mass spectrometry and UV-Vis, IR, and 1H NMR spectroscopy. Partial reduction of Mn(III) to Mn(II) takes place upon dissolution of manganese(III) complexes in DMF. The addition of solid NaOH to a solution in DMF or ethanolamine gives unstable Mn(II) porphyrins. The photochemical stability and oxidative degradation of Mn(III) porphyrins were studied in chloroform and in a chloroform–hydrogen peroxide mixture. The metal exchange reaction between asymmetrically substituted Cd(II) porphyrins and MnCl2 in DMF was studied. The kinetic parameters of the reaction were calculated. The influence of substituents and the nature of the salt on the kinetic parameters of the metal exchange reaction was identified.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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