ANALYTICAL STUDIES OF AZODYE 2-(SULFAPYRIDINE AZO)-4,5- DIPHENYL IMIDAZOLE AS REAGENT FOR COMPLEXES FORMATION WITH CADMIUM(II) AND MERCURY (II) IONS
Journal Title: World Journal of Pharmaceutical Research - Year 2018, Vol 7, Issue 3
Abstract
The yellow azodye ligand 2-(Sulfapyridine azo)-4,5-Diphenyl Imidazole (L) (λmax 440nm.) forms a stable orange color with each cadmium (II) (λmax 490nm.) and mercury (II) (λmax 490nm.), with stoichiometry of both 1:2 (M:L). The complexes were characterized by FT-IR, M.P., visible, molar conductivity and atomic absorption spectroscopic. The suitable pH values for forming complexes are 11 and ethanol respectively. With molar absorptivity coefficients 4.6 and 2.3 x 104 l.mole-1.cm-1 respectively. The obeyness of Beer‟s law up to 4.5 ppm of Cd and 2.8 ppm of Hg. The optimum conditions of the formation of complexes were investigated and their stability formation constants were determined by using of corresponding solutions method. The chemical formula of each complex was suggested.
Authors and Affiliations
Dr. Tarek A. Fahad
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