A convenient new Method for the preparation of vanadium(III) β-diketonates

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Abstract
The vanadium(111) tris-β-diketonates derived from pentane-2,4-dione and 13 other β-diketones were prepared by reduction of oxovanadium(1V) sulphate with sodium dithionite and chelation of the vanadium(111) with ligand in an aqueous alcohol medium. The chelate prepared with pentane-2,4-dione was also obtained by reduction of ammonium vanadate and oxobis(pentane-2,4-dionato)-vanadium(1V). Preparative details are given and the advantages, and some difficulties, of the method are discussed.

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