Synthesis,crystal structures,and biological property of dinuclear oxovanadium(V) complexes derived from tridentate Schiff bases |
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| Authors: | X J Zhao Q Peng L W Xue |
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| Institution: | 1. College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan Henan, 467000, P.R. China
2. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang Henan, 464000, P.R. China
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| Abstract: | A pair of structurally similar dinuclear oxovanadium(V) complexes, VO2L1]2 (I) and VO2L2]2 (II), where L1 and L2 are the mono-anionic form of 2-(2-isopropylaminoethylimino)methyl]-4-methylphenol (HL1) and 4-fluoro-2-(2-isopropylaminoethylimino)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/c, a = 12.528(1), b = 12.266(1), c = 9.432(1) Å, β = 104.814(3)°, V = 1401.2(3) Å3, Z = 2. The crystal of I is monoclinic: space group P21/n, a = 12.3128(5), b = 6.5124(3), c = 17.1272(7) Å, β = 105.863(1)°, V = 1321.1(1) Å3, Z = 2. The V…V distances are 3.210(1) Å in I and 3.219(1) Å in II. The V atoms in the complexes are in octahedral coordination. Biological assay indicates that complex II, bearing fluoro-substitute groups, has stronger antimicrobial activity against most bacteria than complex I which bearing methyl-substitute groups. |
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