Oxidation-reduction polymers have been obtained by polymerization of pyridine nitriles and their derivatives in the presence of Friedel-Crafts catalysts and complex catalysts. The influence of the nature of the substituents in pyridine nitriles, the nature of catalyst, temperature and time of the process upon the conversion of monomers has been discussed. The data on the sorption ions of transition metals have been presented. The principal physical -chemical, acidic-basic and oxidation--reduction properties of the synthesized macromolecules have been determined. (c) 2005 Elsevier B.V. All rights reserved.