journal of kerbala university

The tetradentate (S4) ligand have been synthesized through the refluxed of 2-amino-1,3,4- thiadiazole -5- thiol with dibromoethane in presence anhydrous sodium carbonate. The metal complexes of this ligand was curried out by the direct reaction of metal salts with ligand .
The prepared complexes and ligand were characterized by FT - IR ,UV-Vis ,NMR , Mass Spectroscopies and C.H.N.S elementary analysis. In addition to the motor conductivity and magnetic successpitibilty. Stability constant and mole ratio was carried out of prepared complexes. The thermodynamic parameters ΔH , ΔG , ΔS were measured. The spectroscopic studies and magnetic moments measurements showed the octahedral geometry around the Co, Cu and tetrahedrul geometry around Nickel ion.