Figure 2
Polyhedral representation of (left) the unit-cell structure viewed along the −a axis and (right) a segment of the (W3SeO12)2− structure along with the K+ counter-cations, viewed along the −b axis, of K2W3SeO12 (4α). A W1W2W3O15 moiety with pyramidal selenium is indicated by a dashed red line and the net dipole directions of octahedral WO6 and pyramidal SeO3 are shown. |