Browsing by Author "Tesfay Kahssu"

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    Synthesis and Characterization of Multinuclear Transition Metal Complexes Based on S-Traizine Containing Multidentate Ligands
    (Addis Ababa Universty, 2007-03) Tesfay Kahssu; Raju V.J.T. (Professor)
    The multidentate ligand, BDTSTHEBD, was synthesized using precursors such as DAAP, DAAD, BDTHEBD and thiosemicarbazide and was characterized by FTIR, NMR and electronic spectroscopy. Co (II) and Ni (II)-complexes were synthesized using the ligand, BDTSTHEBD, and respective metal chloride in a mole ratio of 1:3 and characterized by analytical studies, FTIR and electronic spectroscopy, conductance, magnetic susceptibility measurement and thermal analysis. The non-electrolyte natures of the complexes were ascertained from conductivity measurements. Atomic absorption spectroscopy (AAS) and thermal analysis (TA) techniques were also used to characterize the metal complexes. UV-VIS and magnetic susceptibility measurements indicate octahedral geometry for Co(II)-complex and tetrahedral geometry for Ni(II)-complex. Key words: Heterocyclic compounds, multidentate ligand, Co (II) and Ni (II) complexes, thiosemicarbazide, synthesis of BDTSTHEBD.