Nuclear magnetic resonance studies on fluorine-containing compounds. Part III. The tetrafluoro-oxovandate(V) ion

Abstract

The preparation of the caesium salt of the VOF₄^– ion is described. I.r. and Raman studies indicate that it has C_4v symmetry in the solid state. ¹⁹F and ⁵¹V N.m.r. data suggest that in HF solution there is rapid fluorine rearrangement between square pyramidal and trigonal bipyramidal stereochemical arrangements.