Add time:09/07/2019 Source:sciencedirect.com
Pyridoxal isonicotinoyl hydrazone (HL) and its copper(II) complexes: [CuLCl(H2O)2] (1), [CuL(OAc)](H2O) (2), [CuL(OAcac)] (3), [CuL(NO3)](H2O) (4), [CuL2](H2O) (5) were synthesized and characterized. The ligand has been obtained by condensation of 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde (pyridoxal) hydrochloride with isonicotinoyl hydrazide.The characterization of the formed compounds was done by 1H NMR, 13C NMR, UV–Vis, IR and EPR spectroscopy as well by thermal studies and elemental analysis. The crystal structure of HL has been determined by single crystal X-ray diffraction studies. The microbiological effect of the ligand and all five complexes against both Gram-positive and Gram-negative strains, Staphylococcus aureus ATTC 6538, Bacillus cereus ATCC 14579, Escherichia coli W3110 and Pseudomonas aeruginosa ATCC 9027 was tested.
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