Characterization of Novel Vanadium(III)/Acetate Clusters Formed in Aqueous Solution

We report the first structures of simple acetate complexes of
vanadium(III) formed in aqueous solution. Paramagnetic 1H NMR
spectroscopy titration experiments indicate the formation of two
major V(III)/acetate complexes in acidic aqueous solution for
acetate/V(III) ≤4, pD 3.50. A novel tetranuclear cluster and a
trinuclear cluster have been characterized by X-ray diffraction
studies. Mass spectrometry measurements show these clusters
retain their integrity in solution.