Features of the solvation of meso-triphenylcorrole in organic solvents according to calorimetry

Enthalpies of dissolution of meso-triphenylcorrole are measured according to calorimetry in solvents with various polarities and electron donor abilities, the values of which are more exothermic than those for porphyrins of similar structure. The most negative values Delta(sol) H (au <) are found in a medium of polar electron donor solvents, due to the formation of H-associates of the H-3(ms-Ph)(3)Cor center dot Solv type with chemically active NH-bonds of macrocycles; the concentration dependences of the enthalpy of dissolution of tetrapyrrols in DMF and DMSO are determined for the first time. It is shown that the value of the enthalpy of moving from standard solvent to DMF agrees with the heat of vaporization of solvent from H-associate H-3(ms-Ph)(3)Cor center dot DMF obtained earlier, which characterizes the energy of specific corrole-solvent interaction.