Figure 2 Coordination spheres of the Cs1+ (left) and Cs2+ (right) cations in Cs3Sm7Se12. Displacement ellipsoids are drawn at the 90% probability level. Symmetry codes: (i) -x + [{1\over 2}], y - [{1\over 2}], z + [{1\over 2}]; (ii) -x + [{1\over 2}], y - [{1\over 2}], z - [{1\over 2}]; (iii) -x + 1, -y + 1, -z; (viii) -x + 1, -y, -z; (ix) x + [{1\over 2}], -y + [{1\over 2}], -z - [{1\over 2}]; (x) x + [{1\over 2}], -y + [{1\over 2}], -z + [{1\over 2}].  [article HTML]