Synthesis,physicochemical and coordination properties of 5,15-diphenyltetramethyltetraethylporphyn nitro derivatives

The 5,15-diphenyl-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphyrin nitro derivatives containing the nitro groups in the meso-positions of the porphyn ring and/or para-positions of phenyl rings were synthesized. Porphyrins were characterized by electron absorption, ¹H NMR, and IR spectra. The purity and individuality of the synthesized compounds was proved by TLC and elemental analysis. Kinetic parameters of complexation reactions of the synthesized porphyrins with copper acetate in pyridine and in the mixed solvent benzene-acetic acid (7:3) depend on the degree of deformation of the tetrapyrrole cycle, on the solvation effects and electronic effects of the nitro groups.