Oxavanadium coordination compounds with acetone aroylhydrazones

Complex compounds of vanadyl with the products of aroylhydrazone condensation with acetone of VO(p-XBHA)2 composition, where XBHA deprotonated form of p-X-, p-Cl-, p-Br-, p-OCH3-, p-NO2-acetone benzoylhydrazone are synthesized in the aqueous-alcoholic medium. By comparison of infrared s ctra of ligands and synthesized compounds is established that the acetone aroylhyzones are coordinated by vanadyl ion in the deprotonated form by means of oxygen and nitrogen atoms. FPR spectra in the chloroform and toluene solutions are studied; the parameters of isotropic and anisotropic spin hamiltonian, which successfully agree with the literature data for the vanadyl complexes having Csub(4v) symmetry, in which the vanadyl ion is surrounded by two atoms of oxygen and nitrogen, are determined