Terpolymeric ligand (m-CMF-I and m-CMF-II) synthesized by acid catalyzed polycondensation of m-cresol and melamine with formaldehyde by varied molar proportion of the reacting monomers. The polycondensation was carried out at 120-1250C in an oil bath in presence of 1M HCl . Structural study was carried out with the help of elemental analysis, IR and NMR. Molecular weight of ligand was determined by non aqueous conductometric titration. In present paper electrical properties of terpolymers were studied. Electrical conductivity was studied as a function of temperature using voltage divider method. Terpolymeric ligands were found to show semiconducting behaviour in different temperature ranges. The activation energy found to be in order m-CMF-I > m-CMF-II.
