International Journal of Chemical Studies
Vol. 3, Issue 2 (2015)
Synthesis, characterization, stability constant and microbial activity of schiff bases and their CoII, NiII, CuII & ZnII Metal Chelates
Author(s): Muthal B.N., Raut B.N., Tekale A.S.
Abstract: The three new Schiff bases derived from 4-(p-bromophenyl)-2-amino-thiazole and R-substituted 2-hydroxyacetophenone (R = H, 5-CH3 and 5-Cl) and transition metals (CoII, NiII, CuII and ZnII). The complexes were characterized by elemental analysis, molar conductance, magnetic susceptibility and spectral studies (IR & UV). The metal coordinates with thiazole ring nitrogen atom, azo nitrogen atom and phenolic oxygen atom. The NNO donor ligand acts as a tridentate ligand in all complexes. The complexes have 1:2 (metal-ligand) stoichiometry and an octabedral geometry. The thermodynamic parameter H, G and S also calculated at elevated temperature (25, 35 & 45 °C) H and G are negative, while S is positive. The Schiff bases whose antibacterial and antifungal activities are checked and found that they are active and inactive respectively.
Pages: 12-16 | 957 Views 19 Downloads
How to cite this article:
Muthal B.N., Raut B.N., Tekale A.S.. Synthesis, characterization, stability constant and microbial activity of schiff bases and their CoII, NiII, CuII & ZnII Metal Chelates. Int J Chem Stud 2015;3(2):12-16.