Kinetics of Formation of Octa(p-Bromophenyl)tetraazaporphine Complexes with N-Bases in Benzene-Dimethyl Sulfoxide System

Author： Petrov O.   Osipova G.   Berezin B.   Nikolaeva O.  

Publisher： MAIK Nauka/Interperiodica

ISSN： 1070-3284

Source： Russian Journal of Coordination Chemistry, Vol.31, Iss.11, 2005-11, pp. : 809-813

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Abstract

The acid-base interaction of octa(p-bromophenyl)tetraazaporphine with nitrogen-containing organic bases in benzene-DMSO system is studied. The structures of the proton-transfer complexes formed in the reaction are suggested. The reaction rate, activation parameters, and mechanism of intermolecular transfer of protons of the NH groups of octa(p-bromophenyl)tetraazaporphine to a base were shown to be determined by the nature of the proton-acceptor molecules. The dielectric permeability of a binary solvent was found to significantly affect the kinetic parameters of the process.

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