ISSN

0974-4150 (Online)
0974-4169 (Print)


Author(s): I.E. Otuokere, E.N. Orjiako, G.U.Okafor, A.J. Chinweuba

Email(s): tosmanbaba@yahoo.com

DOI: Not Available

Address: I.E. Otuokere1, E.N. Orjiako2, G.U.Okafor3 and A.J. Chinweuba2
1Department of Chemistry, Michael Okpara University of Agriculture, Umudike
2Department of Industrial Chemistry, Anambra State University, Uli
3Department of Pure and Industrial Chemistry, Nnanmdi Azikiwe University, Awka
*Corresponding Author

Published In:   Volume - 3,      Issue - 4,     Year - 2010


ABSTRACT:
New Schiff base ligand (benzene-1,2-diyldimethaniminedibenzoic acid) was prepared via condensation of o-phthaldehyde and 2-aminobenzoic acid in 1:2 ratio. Metal complexes were prepared and characterized using elemental analyses, IR, molar conductance, electronic spectra, 1H NMR and 13CNMR. From the elemental analyses and spectra data, the complexes were proposed to have the general formulae [M(L2)] (where M = Co(II), Ni(II), Cu(II) and Zn(II)) . The molar conductance data revealed that all the metal chelates were non-electrolytes. IR spectra suggested coordination to the metal ions in a bi-negative tetradentate manner with NOON donor sites of the azomethine-N and carboxylate-O. The 1H NMR spectral data indicate that the two carboxylate protons are also displaced during complexation. Formula determination using method of continuous variation gave metal:ligand ratio of 1:1. Based on spectra studies, a tetrahedral geometry have been proposed for the complexes.


Cite this article:
I.E. Otuokere, E.N. Orjiako, G.U.Okafor, A.J. Chinweuba. Complexation Behavior of Benzene-1,2-Diyldimethaniminedibenzoic Acid Towards Divalent Metal Ions. Asian J. Research Chem. 3(4): Oct. - Dec. 2010; Page 973-976.


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