title: Synthesis and Crystal Structures of Benzohydroxamate-Coordinated Vanadium(V) Oxo Complexes with Aroylhydrazone Ligands.
abstract: Reaction of [VO(acac)(2)] (where acac = acetylacetonate), benzohydroxamic acid (Hbha), and two similar aroylhydrazone ligands in methanol produced two benzohydroxamate-coordinated mononuclear vanadium(V) oxo complexes with general formula [VOL(bha)], where L = L(1) = N'-(5-bromo-2-hydroxybenzylidene)-2-fluorobenzohydrazide (H(2)L(1)), and L = L(2) = N'-(3-bromo-2-hydroxybenzylidene)-2-fluorobenzohydrazide (H(2)L(2)). Crystal and molecular structures of the complexes were determined by single crystal X-ray diffraction method. All of the investigated compounds were further characterized by elemental analysis, and FT-IR and UV-Vis spectra. Single crystal X-ray structural studies indicate that the benzohydrazone ligands coordinate to the VOcores through phenolate O, imino N, and enolate O atoms, and the benzohydroxamate ligands coordinate to the VO cores through deprotonated hydroxyl O and carbonyl O atoms. The V atoms in both complexes are in octahedral coordination. Thermal stability of the complexes was studied.
authors.forename: Shao-Song
authors.initials: SS
authors.lastname: Qian
authors.forename: Xinlu
authors.initials: X
authors.lastname: Zhao
authors.forename: Jia
authors.initials: J
authors.lastname: Wang
authors.forename: Zhonglu
authors.initials: Z
authors.lastname: You
mesh_terms: D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D006835:Hydrazones / Q000737:chemistry*; D006877:Hydroxamic Acids / Q000737:chemistry*; D008024:Ligands; D014639:Vanadium / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D056831:Coordination Complexes; D006835:Hydrazones; D006877:Hydroxamic Acids; D008024:Ligands; D014639:Vanadium; C006696:benzohydroxamic acid