Asian Journal of Research in Chemistry

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Complexation Behavior of 1-(2, 4-Dihydroxyphenyl) Ethanone Ligand Towards Co(II), Ni(II), Zn(II) and Pd(II) Metal Ions


Affiliations
1 Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Nigeria
2 Department of Industrial Chemistry, Anambra State University, Uli, Nigeria
3 Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
     

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The reaction of benzene-1,3-diol with ethyl cyanide have been studied and the product 1-(2,4- dihydroxyphenyl) ethanone have been isolated. Divalent metal complexes of Co (II), Ni (II), Zn (II) and Pd (II) have been synthesized and tentative structures were proposed for these complexes based on elemental analysis, electrical conductivity, UV-Vis, IR, 1HNMR, 13CNMR. The spectra studies suggested bidentate co-ordination through the carbonyl and deprotonated hydroxyl group. The formula determination by method of continuous variation suggested a metal:ligand ratio of 1:2. A tetrahedral geometry has been suggested for the complexes.

Keywords

Ligands, Complexes, Spectra, Tetrahedral Geometry.
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  • Complexation Behavior of 1-(2, 4-Dihydroxyphenyl) Ethanone Ligand Towards Co(II), Ni(II), Zn(II) and Pd(II) Metal Ions

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Authors

I. E. Otuokere
Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Nigeria
E. N. Orjiako
Department of Industrial Chemistry, Anambra State University, Uli, Nigeria
G. U. Okafor
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
A. J. Chinweuba
Department of Industrial Chemistry, Anambra State University, Uli, Nigeria

Abstract


The reaction of benzene-1,3-diol with ethyl cyanide have been studied and the product 1-(2,4- dihydroxyphenyl) ethanone have been isolated. Divalent metal complexes of Co (II), Ni (II), Zn (II) and Pd (II) have been synthesized and tentative structures were proposed for these complexes based on elemental analysis, electrical conductivity, UV-Vis, IR, 1HNMR, 13CNMR. The spectra studies suggested bidentate co-ordination through the carbonyl and deprotonated hydroxyl group. The formula determination by method of continuous variation suggested a metal:ligand ratio of 1:2. A tetrahedral geometry has been suggested for the complexes.

Keywords


Ligands, Complexes, Spectra, Tetrahedral Geometry.