Figure 1
The structure of ZrW1.8V0.2O7.9, which also serves as a schematic representation of the high-temperature disordered structure of β-ZrW2O8. Displacement ellipsoids are drawn at the 75% probability level. The basic asymmetric unit and its neighbor are dark-colored, while the second disorder group is light gray. Atoms on the threefold axis (W1, M2 and O3) have an occupancy fraction of 0.5, while that of O4 is 0.45. [Symmetry codes: (i) 1 − x, 1 − y, 1 − z; (ii) z, x, y; (iii) y, z, x; (iv) 1 − y, 1 − z, 1 − x; (v) 1 − z, 1 − x, 1 − y.] |