Zinc(II) and nickel(II) complexes derived from 2-bromo-6-[(2-Isopropylaminoethylimino)methyl]phenol: Synthesis,structures, and antimicrobial activity |
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| Authors: | G. P. Cheng L. W. Xue C. X. Zhang |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan, Henan, 467000, P.R. China
2. Coal Chemical Industry Branch of Shenhua Ningxia Coal Group, Yinchuan, Ningxia, 750411, P.R. China
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| Abstract: | The Schiff base 2-bromo-6-[(2-isopropylaminoethylimino)methyl]phenol (HL), derived from 3-bromosalicylaldehyde with N-isopropylethane-1,2-diamine, and its zinc(II) and nickel(II) complexes [Zn(HL)2(NCS)2] (I) and [Ni(HL)2(N3)2)] · 0.25H2O (II) have been prepared and characterized by elemental analyses, IR, and single crystal X-ray crystallographic determination. The crystal of I is orthorhombic: space group Pbca, a = 13.6928(9), b = 9.7203(6), c = 22.926(1) Å, V = 3051.4(3) Å3, Z = 4. The crystal of II is triclinic: space group $Pbar 1$ , a} = 8.0212(7), b = 12.744(1), c = 15.590(2) Å, α = 104.802(3)°, β = 90.561(3)°, γ = 103.130(3)°, V = 1496.6(2) Å3, Z = 1. The zwitterionic Schiff base ligands coordinate to the metal atoms through phenolate O, imine N, and amine N atoms. Each metal atom in the complexes is in octahedral coordination. The effect of these complexes on the antimicrobial activity against Staphylococcus aureus, Escherichia coli, and Candida albicans were studied. |
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