(2,4-Pentanedionato)vanadium(III) and -vanadium(II) complexes: synthesis from the oxovanadium reductive chlorination and their structural characterization

The first of the two methods of preparing (V acac Cl2 THF 2) involves the reductive deoxochlorination of (VO acac 2) using TiCl3(THF)3. This procedure is applicable in cases wherein the oxovanadium complex can be obtained from air-aqueous solutions. Otherwise, the second method, which involves the addition of acacNa to a solution of VCl3(THF)3, can be used. Moreover, metallic zinc can be utilized to reduce the vanadium(III) chloride intermediate to (V acac Cl THF 3).