Browsing by Author "Mamo Wondimagegne"

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    Synthesis and Characterization of Oxovanadium (IV) Complexes of Multidentate Ligands Derived from Symmetric Triazines
    (Addis Ababa Universty, 2006-07) Mamo Wondimagegne; Raju V.J.T. (Professor)
    Two new vanadyl(IV) complexes with s-triazine based ligands, 4-hydroxy,2,6,bis (hydrazino)-s-triazine and 4-hydroxy-2,6-bis(hydroxyamino)-s-triazine were synthesized and characterized by elemental analysis, electronic, FTIR, 1H NMR, 13C NMR spectroscopy. In addition magnetic susceptibility, cyclic voltammetry, conductivity measurement, melting point determination and vanadium and sulphate estimation were also undertaken. Elemental analysis and IR data revealed bi-dentate nature of the ligand and participation of SO4 2- in coordination of the VO(II)-HBHATZ complex. The nonelectrolytic nature of complexes was ascertained from conductivity measurements UV-Vis and magnetic susceptibility measurements indicate a square pyramidal geometry of the complex