Browsing by Author "Osunniran, W. A. and A. C. Tella."

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    Synthesis and Characterization of Transition Metal Complexes of Cu(II), Ni(II), Co(II) and VO(IV) with Tetradentate Ligands Derived from Substituted Acetophenone and Benzophenone
    (2011-06-30) Osunniran, W. A. and A. C. Tella.
    Two tetradentate Schiff base ligands, N,N´-bis(2-hydroxy-5-methoxyacetophenone) ethylenediimine (MaenH2) and N,N´-bis(2-hydroxy-4-methoxybenzophenone) ethylenediimine(MbenH2) were formed by 1:2 molar condensation of ethylenediamine with 2-hydroxy-5-methoxyacetophenone and 2-hydroxy-4-methoxybenzophenone respectively. These Schiff base ligands formed complexes (1:1 molar ratio) with Copper, Nickel, Cobalt and Oxovanadium ions. The complexes were characterized by Infrared, Electronic Spectra and elemental analysis. The spectra data of the ligands and their complexes were discussed based on the structural changes which occur due to complexation. The results suggest that the metal is bonded to the ligand through the phenolic oxygen and the imino nitrogen.