Synthesis Of New Multidentate Sulfur Heterocyclics And Metal Complexesstructural Studies

The 3’, 4’-diammino-2, 2’: 5’, 2’’-ter thiophene ligand dissolved in chloroform was usedrnto synthesize metal complexes of Ni (II) and Zn (II). They have been characterized byrnanalysis magnetic susceptibility and IR, UV, 1H and 13C NMR spectroscopy. Thernconductivity measurement shows that the Ni (II) complex is electrolyte while the Zn (II)rncomplex is non-electrolyte and the chlorides are coordinated in the inner sphere of the Znrn(II) metal complex. Except in DMSO both metal complexes are insoluble in mostrncommon solvents. For both complexes, the metal to ligand ratio in the complex is 1:1.rnThe data show both Ni (II) and Zn (II) complexes with formulae [NiLCl(H2O) 3].Cl.6H2Ornand [ZnLCl2(H2O)2].2H2O respectively possess octahedral geometry in which the ligandrnbehaves as a neutral NN donor.rnKey words. thiophene, thiophene derivative, metal complexes of thiophene derivative

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