Synthesis, characterization, crystal structures, and antibacterial activity of oxidovanadium(V) complexes with mixed ligands

Two new oxidovanadium(V) complexes, [VO(L)(Ehp)] ( I ) and [VO(L)(Aha)] ( II ), where L is the dianionic form of 4-bromo- N '-(4-oxopentan-2-ylidene)benzohydrazide (H 2 L), Ehp is the monoanionic form of 2-ethyl-3-hydroxy-4 H -pyran-4-one (HEhp), and Aha is the monoanionic form of acetohydroxam...

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Bibliographic Details
Published in:Russian journal of coordination chemistry 2017-06, Vol.43 (6), p.396-403
Main Authors: Qiu, X. Y., Liu, S. J., Lei, J. X., Ye, Y. T.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Coordination compounds
Crystal structure
Diffraction
Electronic spectra
Infrared analysis
Infrared radiation
Infrared spectra
Inorganic Chemistry
Ligands
NMR
Nuclear magnetic resonance
Physical Chemistry
X-ray diffraction
X-rays
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Summary:Two new oxidovanadium(V) complexes, [VO(L)(Ehp)] ( I ) and [VO(L)(Aha)] ( II ), where L is the dianionic form of 4-bromo- N '-(4-oxopentan-2-ylidene)benzohydrazide (H 2 L), Ehp is the monoanionic form of 2-ethyl-3-hydroxy-4 H -pyran-4-one (HEhp), and Aha is the monoanionic form of acetohydroxamic acid (HAha), were prepared and characterized by elemental analysis, infrared and electronic spectra, and 1 H NMR spectra. Structures of the complexes were further confirmed by single crystal X-ray diffraction (CIF files CCDC nos. 1477847 ( I ), 1477850 ( II )). H2L coordinates to the V atom through the two enolic O atoms and the imino N atom. The ligands Ehp and Aha coordinate to the V atoms through bidentate OO donor set. The V atoms of the complexes are in octahedral coordination, with the oxo group furnished the octahedral geometry. The complexes show effective antibacterial activity against Bacillus subtilis .
ISSN:1070-3284
1608-3318
DOI:10.1134/S1070328417060069