Polyhedron p. 684 - 692 (2015)
Update date:2022-08-10
Topics:
Mezey, Reka-?tefana
Máthé, István
Shova, Sergiu
Grecu, Maria-Nicoleta
Ro?u, Tudor
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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