Poly[4-amino-2,6-pyrimidinodithiocarbamate] (PPT) is prepared from the reaction of 2-mercapto-4,6-diaminopyrimidine with carbon disulfide followed by condensation through the removal of H2S gas. The polymer is then used as a ligand to form polymer-metal complexes with the 3d-elements Mn(II), Fe(II), Fe(III), Co(TI), Ni(II), Cu(II), and Zn(II). The DC electrical conductivity as a function of temperature is measured in the temperature range 300-500 K. The mechanism of conduction, the role of adsorbed water and complexation are explained on an energy diagram. This is carried out in accordance with the u.v.-VIS spectrum, TGA and DTA measurements. For comparison with Sd-elements, measurements are carried out also on Hg(II)-polymer complex.