Figure 1
A layer of the KNb1.76Sb3.24O13 structure (similar to the KMo5O13 structure), viewed along the [100] direction. The Sb1O6 octahedra (Mo1O6 octahedra in the KMo5O13 structure) are hatched, and the (Nb2,Sb2)O6 (Mo2 in KMo5O13) and (Nb3,Sb3)O6 (Mo3 in KMo5O13) octahedra are grey. Open circles denote K atoms. |