Figure 2
A view of the oxygen coordination around the cations, with displacement ellipsoids shown at the 50% probability level. (a) Ba12+, (b) Ba22+, (c) Ba32+ and (d) Ba42+ [Symmetry codes: (i) x − , −y + , −z + 1; (ii) −x + , y + , z; (iii) −x + 1, −y + 1, −z + 1; (iv) x + , −y + , −z + 1; (v) x + , y + , z; (vi) −x + 1, y, −z + ]. |