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Synthesis,crystal structures,spectroscopic studies and antibacterial properties of a series of mononuclear cobalt(III) Schiff base complexes |
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| Authors: | Maryam Hasanzadeh Mehdi Salehi Maciej Kubicki Seyyed Mohammad Shahcheragh Grzegorz Dutkiewicz Mikołaj Pyziak Ali Khaleghian |
| Affiliation: | 2. Department of Chemistry, College of Science, Semnan University, Semnan, Iran 1. Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614, Poznan, Poland 3. Department of Organic Chemistry, Kharazmi University, Tehran, Iran 4. Department of Biochemistry, Semnan University of Medical Science, Semnan, Iran |
| Abstract: | New complexes of cobalt(III) with the tridentate and tetradentate Schiff base ligands: 3-methoxy-2-{(Z)[(2-hydroxyphenyl)imino]methyl}phenol (H2L1), 4-[(2-hydroxyphenyl)imino]-2-pentanone (H2L2); and 2-((E)-1-(2-((E)-1-(2-hydroxy-4,5-dimethylphenyl)ethylideneamino)ethylimino)ethyl)-4,5 dimethylphenol (H2L3), namely [CoIII(L1)(N-MeIm)3]PF6 (1), [CoIII(L1)(py)3]ClO4 (2), [Co(L1)(py)3][Co(L1)2] (3) and [CoIII(L2)(N-MeIm)3]PF6 (4) and [Co(L3)(N-MeIm)2]PF6 (5), were synthesized and characterized by physico-chemical and spectroscopic methods. The crystal structures of the complexes were determined by X-ray crystallography. In each of these complexes, the cobalt(III) centre has a slightly distorted octahedral environment, utilizing all available coordination centres of the ligands. The complexes were also screened for in vitro antibacterial activities against four human pathogenic bacteria, and their minimum inhibitory concentrations indicated good antibacterial activities. |
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