Om. Chernova et Mb. Berezin, Thermochemistry of solution of natural porphyrins in benzene-electron donor mixed solvents, RUSS J PH C, 74(2), 2000, pp. 141-144
The solution of natural porphyrins of the protoporphyrin-IX group and their
zinc metallocomplexes in mixed benzene-dimethyl formam ide, benzene-di met
hylsulfoxide, and benzene-pyridine solvents was studied calorimetrically at
298.15 K in the whole composition range. The principal patterns of variati
ons in the enthalpy characteristics of porphyrin-electron donor solvent int
eractions depending on the structure of the porphyrin, the electronic struc
ture of the metal ion, and the composition of the mixed solvent were determ
ined.