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

Abstract

The reactivity of 3d-metal solvates (MX 2 (S) 4 ) and (MX 2 (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 dif- ferent structures, N-methyloctaethylporphyrin and meso-tetraphenyltetrabenzoporphyrin, is discussed. A strong catalytic effect of solvents and ligands having 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. DOI: 10.1134/S1070363206100288