Chemical composition of donor–acceptor complexes of hydroxyoxo(5,10,15,20-tetraphenylporphinato)molybdenum(V) with 3,5-dimethylpyrazole and equilibrium constants for their formation


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Abstract

The results from a quantitative study of reactions between hydroxyoxo(5,10,15,20-tetraphenylporphinato)molybdenum(V) (O=Mo(OH)TPP) and 3,5-dimethylpyrazole, a biologically active base, in toluene are presented. The chemical structure and key parameters of intermediates and reaction products are determined by spectral means. The equilibrium constant (K = 51.3 L/mol) is calculated and a full kinetic description of simple reactions that occur in this system during complex transformation is obtained. The prospect of using a mixed porphyrin-containing complex as a receptor for 3,5-dimethylpyrazole, a building block for alkaloids and pharmaceutical preparations, is substantiated.

About the authors

E. V. Motorina

Krestov Institute of Solution Chemistry

Email: tnl@isc-ras.ru
Russian Federation, Ivanovo, 153045

T. N. Lomova

Krestov Institute of Solution Chemistry

Author for correspondence.
Email: tnl@isc-ras.ru
Russian Federation, Ivanovo, 153045

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