Figure 5
Projections on [100] of (a) the m = 4 member (P4W8O32) and (b) the m = 5 member (P4W10O38). On these projections, the shortest segments (represented by white arrows) include m/2 octahedra for even m members (a) whereas they are alternatively (m + 1)/2 and (m − 1)/2 long for odd m members (b). |