Synthesis and Physico-chemical Studies of Some Heavy Metals Complexes with New Organic Ligand 4-((4-Formyl-2-Hydroxy Phenyl) Diazenyl)-N-(5-Methyl Isoxazol-3-yl) Benzene Sulfonamide
Keywords:
Isoxazole, Metal complexes, Ligand, Coordination, Azo dye, Stoichiometry.Abstract
New complexes were synthesized with the following metals [Cu (II), Pb (II), and Hg (II] based on the new ligand of 4-((4-Formyl-2-Hydroxy phenyl) Diazenyl -N- (5-Methyl Isoxazol-3-yl) Benzene Sulfonamide (FDS). This ligand was synthesized via reaction of 4-amin-N- (5-methyl-1, 2-oxazol-3-yl) with (Para-hydroxy benzaldehyde) in the presence of alcohol alkaline solution. The prepared ligand and its chelating complexes have been diagnosed by different spectroscopic techniques such as 1HNMR. The physical properties of the prepared compounds were evaluated. Based on Lambert-Beers law, the resulting ideal concentration ranged between 0.00001- 0.0001 M. To determine the stoichiometry of complexes, spectral studies were conducted for all of them, yielding a molar ratio of 1:2. The ligand has a bidentate behavior, and the final structures of complexes are hypothesized to be octahedral.
