Journal
ASIAN JOURNAL OF CHEMISTRY
Volume 25, Issue 18, Pages 10475-10481Publisher
ASIAN JOURNAL OF CHEMISTRY
DOI: 10.14233/ajchem.2013.15735
Keywords
Azo ligand; Coupling reaction; Metal complexes; Spectroscopic studies
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A new ligand containing thiazole and imidazole rings as organic heterocyclic azo dye compound 2-[-2-(6-nitrobenzothiazolyl)azo]imidazole (NBTAI) was prepared by coupling reaction between 6-nitro benzothiazole chloride with imidazole in alkaline alcoholic solution. New six complexes with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) were prepared and characterized by elemental analysis, molar conductance measurements, magnetic moment measurements at room temperature, infrared and electronic spectra. The analytical data show that the metal to ligand ratio [M: L] in all complexes is (1: 2). The spectral and analytical data revealed that this ligand behaves as a bidentate chelating agent and the coordination number of all metal ions are found to be six in coordination through the nitrogen N-3 atom of azo methine group of heterocyclic imidazole ring and the other nitrogen atom of azo group which is the farthest of imidazole molecule, from two ligands with two molecules and two chloride ions. The results are explained in the light of these analysis.
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