Synthesis, Crystal Structure, and Antibacterial Activity of a Dinuclear Oxidovanadium(V) Complexes Derived from 2-[(2-Methylaminoethylimini)methyl]-4-Trifluoromethoxyphenol

A new dinuclear oxidovanadium(V) complex, [V2O2(mu-O)(2)L-2], where L is the monoanionic form of 2-[(2-methylaminoethylimini)methyl]-4-trifluoromethoxyphenol (HL), was prepared and characterized by IR, UV-Vis and H-1 NMR spectra, as well as single crystal X-ray diffraction (CIF file CCDC no. 1567062). The complex crystallizes as the monoclinic space group P2(1)/c with unit cell dimensions a = 12.974(3), b = 6.572(2), c = 17.205(3) , beta = 107.300(3)A degrees, V = 1400.7(5) (3), Z = 2, R (1) = 0.0879, wR (2) = 0.1208, GOOf = 1.068. X-ray analysis indicates that the complex is a centrosymmetric dinuclear oxidovanadium(V) species with the V atoms in octahedral coordination. The Schiff base and the complex were evaluated for their antibacterial (Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Pseudomonas fluorescence) activities. The complex has the most activity against B. subtilis with the MIC value of 1.2 mu g mL(-1).