VANADIUM COMPLEXES WITH TRIDENTATE DIACIDIC LIGANDS - THE CRYSTAL-STRUCTURES OF BIS[ACETYLACETONATO-THIOBENZOYLHYDRAZONATO(2-)]VANADIUM(IV), METHOXO-OXO-[SALICYLALDEHYD-THIOBENZOYLHYDRAZONATO(2-)]VANADIUM(V), AND METHOXO-OXO-[SALICYLALDEHYDBENZOYLHYDRAZONATO(2-)]METHANOL VANADIUM(V)

By template reactions of bis(acetylacetonato)oxovanadium(IV) and bis(salicylaldehydato)oxo-vanadium(IV), respectively, with benzoylhydrazine, thiobenzoylhydrazine, and 2-aminophenol the vanadium(IV) complexes V(LLL)2 of tridentate azomethine ligands LLL were synthesized. The complexes were characterized by EPR spectroscopy and by absorption spectroscopy. From the complex V(LLL)2 (1), in which LLL is acetylaceton-thiobenzoylhydrazonato(2-), the crystal structure analysis was solved. The vanadium atom in 1 is coordinated trigonal-prismatically by two N, O and S atoms. Furthermore, the oxo vanadium(V) complexes [VO(LLL)(OCH3)] (6) with LLL = salicylaldehyd-thiobenzoylhydrazonato(2-) and [VO(LLL)(OCH3) . CH3OH] (7) with LLL = salicylaldehydbenzoylhydrazonato(2-) were identified by X-ray diffraction and by IR spectroscopy in the reaction products. Crystallographic data for 1, 6, and 7 see "Inhaltsubersicht".