Effects of the ligand structure and electronic properties of the central atom on the kinetics of complex formation of N-methyloctaethylporphyrine with solvate complexes in binary solvents
作者:D. B. Berezin、O. V. Toldina、B. D. Berezin
DOI:10.1134/s1070363206100288
日期:2006.10
The reactivity of 3d-metal solvates [MX2(S)(4)] and [MX2(S-1)(m)(S-2)(4-m)] (where S, S-1, and S-2 are solvent molecules: pyridine, N,N-dimethylformamide, and dimethyl sulfoxide) toward porphyrins with different structures, N-methyloctaethylporphyrin and meso-tetraphenyltetrabenzoporphyrin, is discussed. A strong catalytic effect of solvents and ligands having pi orbitals was found and rationalized in terms of trans effect in the coordination sphere of solvate salts. A probable activation mechanism of the trans effect was proposed, and its magnitude was shown to strongly depend on the metal nature.