Preparation ,Characterization pand Theoretical Studies of Cobalt(II),Nickel(II) and Cupper(II) complexes of bisazo ligand derived from 4,5-diphenyl imidazole and m-Phenylenediamine

Muthanna Journal of Pure Sciences – MJPS
Volume 3 issue 1, 2016

Ahmed Razzaq Ibrahim,

Department of Chemistry, College of Science , University of AL Muthanna-Iraq


Transition metal complexes of Co(II), Ni(II) and Cu(II) with a new bisazo ligand 1,3-Bis (4,5-diphenyl imidazole azo) benzene (BABI) derived from m-phenylenediamine and 4,5-diphenyl imidazole were synthesized. The preparation of the complexes have been conducted after fixing the optimum conditions such as pH and concentration .UV- visible spectra of these complexes solution have been studied for a range of pH and concentration which obey Lampert-Beers Law .The structure of complexes are deduced according to mole ratio method which were obtained from the spectroscopic studies of the complexes solution .The ratios of metal: ligand obtained are (1:1) for these complexes . (UV-Vis) absorption spectra of ethanolic solution of complexes showed bathchromic shift , as compared with that of free ligand .The infrared spectra of the chelating complexes have been studied , Depending on these results the coordination between our ligand and the metal ions take place. The conductivity measurements , elemental analysis ,the percentage of metal ions was determined .Depending on these results ,we may conclude that the ligand was tetradentate . Also the proposed geometrical structure of the complexes of Co(II),Ni(II) and Cu(II) ions are octahedral.

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