Novel modifications of the structure of the layered vanadyl hydrogenphosphate VO(HPO4)·0.5H2O
Abstract
The addition of metal ions such as Zn2+, Ni2+ and Pd2+ during the preparation of the layered vanadyl hydrogenphosphate VO(HPO4)·0.5H2O in aqueous media led to the formation of a new phase which is very different from that of the parent compound. This phase, which appears to be structurally similar to the vanadium(V) phosphate VO(PO4)·2H2O, is a mixed-valent vanadium compound with an expanded c-axis spacing in which the incorporated metal ions, in their divalent state, appear to be lodged in the interlayer region.
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