ABSTRACT
Research of structure and catalytic activity of complexes of nickel in different reactions of oxidation with molecular O2 causes heightened interest of researchers last years in connection with that nickel as an essential catalytic cofactor of enzymes is found in eubacteria, archaebacteria, fungi, and plants. These enzymes catalyze a diverse array of reactions that include both redox and nonredox chemistries [1, 6].
