Synthesis,characterization and antibacterial activity of some new complexes of Cu(II), Ni(II), VO(II), Mn(II) with Schiff base derived from 4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one |
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| Authors: | Tudor Rosu Elena Pahontu Catalin Maxim Rodica Georgescu Nicolae Stanica Gabriela Laura Almajan Aurelian Gulea |
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| Institution: | 1. University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, Str. Dumbrava Rosie nr. 23, 020464 Bucharest, Romania;2. Organic Chemistry Department, Faculty of Pharmacy, University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania;3. “Horia Hulubei” National Institute of Physics and Nuclear Engineering IRASM, Radiation Processing Center, 407 Atomistilor Street, P.O. Box MG-6, Bucharest-Magurele, Romania;4. “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania;5. Coordination Chemistry Department, Moldova State University, Chisinau, Republic of Moldova |
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| Abstract: | Coordination compounds of Cu(II), VO(II), Ni(II), and Mn(II) with the Schiff base obtained through the condensation of 4-amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one with 3-formyl-6-methyl-chromone were synthesized. The characterization of the newly formed compounds was done by 1H NMR, UV–Vis, IR, ESR spectroscopy, elemental analysis and molar electric conductibility. The crystal structure of 1-phenyl-2,3-dimethyl-4-(N-3-formyl-6-methyl-chromone)-3-pyrazolin-5-one (HL) has been determined by X-ray diffraction studies, as well as the one of its copper(II) complex CuL(OAc)]·CH3OH which contains an anionic ligand and an acetate in the coordination sphere of the metal. The single crystal X-ray structure for (HL) was analyzed for its various weak H-bonding and dimeric association. |
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| Keywords: | Schiff bases Antimicrobial activity Metal complexes 4-Amino-2 3-dimethyl-1-phenyl-3-pyrazolin-5-one Crystal structure 3-Formyl-6-methyl-chromone |
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