Synthesis and Characterization of 2-(5-mercapto-1,3,4- thiadiazol -2-yl)isoindoline-1,3-dione (L) and It's Complexes with Some Transition Metals (Co(II) , Ni(II) , Cu(II) , Zn(II) and Cd(II) )

Abstract

In this work ,The ligand 2-(5-mercapto-1,3,4-thiadiazol-2-yl)isoindoline
-1,3-dione (L) has been synthesized by the reaction of 5-amino -1,3,4-thiadiazole -2-
thiol with phthalic anhydride by using fusion method . The metal complexes of the
ligand were prepared with metals chlorides of Co(II) , Ni(II) , Cu(II) , Zn(II) and
Cd(II) in ethanol as solvent . The ligand (L) and its metal complexes have been
characterized by elemental analysis (CHN), IR, 1H-NMR and UV- Vis. spectra ,
magnetic susceptibility measurements , molar conductivity , melting points and
atomic absorption . The metal-ligand ratio was determined by mole ratio method .The
suggested structures for the Co(II) , Ni(II) and Cu(II) complexes are octahedral
geometry and for the Zn(II) and Cd(II) complex are tetrahedral geometry .