Monooxovanadium(V) complexes with bidentate N-phenylbenzohydroxamate

Two complexes of oxovanadium(V) with VO(ONO)(OO)-type coordination were synthesized and analysed by X-ray diffraction, These compounds are (acetylacetone benzoylhydrazonato-O,N,O')(N-hydroxy-N-phenylbenzamido-O,O')oxovanadium(V), [VO(C12H12N2O2)(C 13H10NO2)], and (N-hydroxy-N-phenylbenzamido-O,O')oxo(N-salicylidene-L-alaninato-O,N,O')vanadium(V), [VO(C10H9NO3)(C13H10NO2)]; N-hydroxy-N-phenylbenzamide is also known as N-phenylbenzohydroxamic acid. The distorted octahedral coordination at vanadium is similar in both complexes; the equatorial plane is defined by one N and two O atoms of the tridentate hydrazone ligand and the oxime O atom of the hydroxamate ligand, while the axial oxo group is trans to the carbonyl O atom of the hydroxamate ligand.