The high-pressure form of cadmium vanadate. CdV2O6

The crystal structure of a new high-pressure modification of cadmium divanadium hexaoxide, CdV2O6, was refined from X-ray single-crystal data. It contains zigzag chains of edge-sharing VO6 octahedra. Octahedra in adjacent chains share corners and form corrugated layers. Octahedrally coordinated Cd atoms, which lie on twofold axes, are situated between the layers. The columbite-like structure results in a strong distortion of the CdO6 octahedra which may be stabilized only at high pressure.