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Figure 3 (a) The Rb1(K1) and (b) Rb2(K2) coordination polyhedra, with displacement ellipsoids drawn at the 50% probability level. Symmetry codes: ii: 1-x, + y, 1/2-z; iv: 1-x, 2-y, −z; v: 1-x, − + y, 1/2-z; vi: 1 + x, 3/2-y, − + z; vii: 1 + x, y, z; ix: x, −1 + y, z; x: 1 + x, −1 + y, z; xii: 1-x, 1-y, z. |