Structural Studies of CuV₂O₆ and Ca₂V₂O₇

Abstract

<p>The crystal structure of Cu₂V₂O₆ has been studied by X-ray diffraction techniques. CuV₂O₆ has been found to have a structure closely related to the mineral brannerite as do the majority of the metavanadates, but with lower symmetry. The refinement of the structure showed a bonding geometry consistent with the bond strength-bond length correlations for oxides which have been applied to other vanadate structures.</p> <p>The symmetry and unit cell parameters of Ca₂V₂O₇ have been determined. The attempted solutions are described and suggestions are made for future work on this structure.</p>