Azaporphyrins: structure of the reaction centre and reactions of complex formation

摘要

X-ray, spectral (UV-visible, nuclear magnetic resonance and photoelectron spectroscopy) data and quantum-chemical calculation results for porphyrins, phthalocyanines and azaporph-yrins are compared and conclusions about the influence of aza substitution on the geometry of CN skeleton and on the state of N—H bonds in porphyrin-type ligands are made. The studies of kinetics of metal ion incorporation in azaporphyrins are reviewed and the effect of the ligand structure, nature of metal salt and solvent on the complex formation reaction is discussed.