Synthesis and crystal structures of dimeric schiff base oxovanadium(V) complexes with antimicrobial activity |
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Authors: | G. X. He L. W. Xue G. Q. Zhao |
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Affiliation: | 1. College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan, Henan, 467000, P.R. China
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Abstract: | Two new dimeric oxovanadium(V) complexes, [VO2L1]2 · 2H2O (I) and [VO2L2]2 (II), where L1 and L2 are the monoanionic form of 5-methoxy-2-[(2-methylaminoethylimino)methyl]phenol (HL1) and 5-diethylamino-2-[(2-methylaminoethylimino)methyl]phenol (HL2), respectively, have been synthesized and characterized by elemental analysis, FT-IR spectra, and single crystal X-ray determination. The crystal of I is monoclinic: space group P21, a = 6.858(2), b = 16.630(3), c = 12.306(2) Å, β = 103.985(2)°, V = 1361.9(5) Å3, Z = 2. The crystal of II is triclinic: space group $Pbar 1$ , a = 7.378(2), b = 8.838(2), c = 13.312(3) Å, α = 102.576(2)°, β = 92.044(2)°, γ = 113.017(2)°, V = 772.7(3) Å3, Z = 2. The V...V distances are 3.140(1) Å in I and 3.254(1) Å in II. The V atoms in the complexes are in octahedral coordination. The effect of the complexes on the antimicrobial activity against Staphylococcus aureus, Escherichia coli, and Candida albicans was studied. |
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