Abstract
The reaction of 2,5-dimercapto-1,3,4-thiadiazole (DMT) (6.6 mmol) with zinc, cadmium and mercury chlorides (3.3 mmol) gave new polymer-metal complexes. The poly[di(2,5-dimercapto-1,3,4-thiadiazole)]-metal complexes of Zn(II), Cd(II) and Hg(II) were characterized by elemental analyses, electronic spectra, FTIR spectroscopy, thermal analyses (TGA and DTA) and X-Ray diffraction. The DC electrical conductivity variation with temperature in the range 300-500 K of the polymer-metal complexes after annealing for 24 h at 100C and after doping with 5% I2 is determined for comparison. The activation energies were calculated and the results were interpreted using the band energy model.