Abstract

Two non-stoicheiometric modifications of vanadium antimonate have been examined by antimony-121 Mössbauer spectroscopy and magnetic susceptibility. The oxidised variation prepared by calcination of antimony(III) oxide and vanadium(V) oxide in air contains vanadium(IV) and antimony(V) and the data are consistent with a formulation V(IV) 0.98Sb(V) 0.98O 4. A monophasic antimony deficient vanadium antimonate prepared in oxygen-free nitrogen contains vanadium(III), vanadium(V) and antimony(V) and may be formulated as V(III) 0.72V(V) 0.28Sb(V) 0.72O 3.58.

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