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SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES OF SOME 5-BROMOURACIL-METAL ION COMPLEXES
Faculty
Specific Education
Year:
2019
Type of Publication:
ZU Hosted
Pages:
98-118
Authors:
Akmal Shawky Gaballa
Staff Zu Site
Abstract In Staff Site
Journal:
Research Journal of Pharmaceutical, Biological and Chemical Sciences Chemical Society of Ethiopia and The Authors
Volume:
10
Keywords :
SYNTHESIS, CHARACTERIZATION , ANTIMICROBIAL ACTIVITIES , SOME 5-BROMOURACIL-METAL
Abstract:
Six new complexes, [Mn(BrU)2(H2O)2]4H2O (1), [Cd(BrU)2]2H2O (2), [Cu(BrU)2(H2O)2]2H2O (3), [Co(BrU)2(H2O)2]4H2O (4), [Ni(BrU)2(H2O)2]4H2O (5) and [Ag(BrU)(BrUH)]2(H2O) (6) were prepared by the reaction of 5-bromoouracil with MnCl2·4H2O, CdCl2·2.5H2O, CuSO4·5H2O, (CH3COO)2Co·4H2O, (CH3COO)2Ni·4H2O and AgNO3 respectively. The complexes were characterized by melting point, elemental microanalyses, IR and 1H NMR spectroscopy. The obtained data indicated that the ligand interacted with the metal ions in its mononegatively charged enol form in a bidentate fashion. Thermogravimetric analyses (TGA and DTG) were also carried out. The data obtained agreed well the proposed structures and showed that the complexes were finally decomposed to the corresponding metal or metal oxide. The ligand and its metal-ion complexes were tested for their antimicrobial activities against four bacterial strains (B. subtillis, S. aureus, E. coli and P. aeruginosa) by the agar-well diffusion technique using DMSO as a solvent. The obtained data showed that the complexes were more potent antimicrobial agents than the parent ligand.
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