POLYMERIZATION OF ACETYLENE OVER TIN-PALL ADIUM CATALYSTS

The structure of polyacetylenes formed over tin-palladium complexes in DMFA, DMSO, and acetic acid was suggested on the basis of IR spectros copic findings. The effect of the solvent and the co-catalyst SnCl2 on the polymer structure was discussed. It was shown that disruption of continuity of the polymer conjugation chain, which occurs during polya cetylene-doping with the oxidized form of the co-catalyst Sn4+ or solv ent molecules, probably prevents inactivation of the catalytic center and promotes formation of high-molecular weight products.