The　title　complex　was　prepared　by　the　reaction　of　bis(acetylacetonato)oxovanadium(IV)　benzoylhydrazine　and　8-quinolinol　in　methanol　and　characterized　by　IR.　Raman,　UV　spectra　and　cyclic　voltammetry　measurements.　The　vanadium　atom　has　a　distorted　octahedral　VO(ONO)(ON)　coordination　with　a　normal　V=O　bond　[1.580(4)Å].　Two　oxygen　atoms　and　one　nitrogen　atom　of　the　tridentate　hydrazone　ligand,　and　one　oxygen　atom　of　8-quinolinol　ligand　are　coordinated　to　a　vanadium(V)　atom,　forming　an　equatorial　plane,　the　axial　positions　being　occupied　by　an　oxo　oxygen　atom　and　a　nitrogen　atom　of　the　8-quinolinol　ligand,　respectively.　The　title　complex　is　the　first　example　of　a　six-coordinated　VO3+　complex　with　acetylacetone　benzoylhydrazone　ligand.　©　1997　Elsevier　Science　Ltd.