COMPLEX OF ANILINE WITH CHLOROIRIDATE ANI ON AS A CATALYST OF ELECTROCHEMICAL SYNTHESIS OF POLYANILINE

The initial stages of complex formation between IrCl62- anion and anil ine molecules were studied. It was shown that the complex is of anioni c nature, exhibits paramagnetic properties, and its stoichiometry is 1 : 2. The presence of unpaired spin in the complex is supported by the EPR data, the qualitative calculation showing a single spin per two a niline molecules. Oxidation of aniline to form a radical species proce eds in the reaction system due to formation of the complex between ani line and IrCl62-. This stage is limiting in electrochemical synthesis of polyaniline. In the presence of IrCl62-, this stage proceeds instan tly and leads to acceleration of electrochemical synthesis of polyanil ine, thus reducing the operating voltage and eliminating the induction period.