COMPLEXES OF SOME METAL-IONS OF SCHIFF-BASE LIGAND DERIVED FROM ISATIN WITH 2-AMINOTHIOPHENOL

Complexes of Ni-II, Co-II, Cu-II, Pd-II, Zn-II, Cd-II and Pb-II with t he Schiff base ligand derived from isatin with 2-aminothiophenol (HIAT P), have been synthesized and characterized via elemental analyses, mo lar conductance, magnetic moments, proton nuclear magnetic resonance, infrared and electronic spectral studies. Two types of complexes were isolated. The monometric M(IATP)(2)nH(2)O form in which the ligand act s either monobasic tridenate suggesting octahedral structure or monoba sic bidentate via NS ligating atoms yielding square planar or tetrahed ral structures. On the other hand, the dimeric form [M(IATP)ClH2O](2) in which the ligand acts as monobasic tridentate with sulfur atom form ing a bridge between two central metal ions.