Abstract: | The crystal structure of RbTlI4·2H2O (cubic, , Nr. 226, Z = 24, a = 1993.5(2) pm, 327 unique reflections with Io > 2σ(Io), R1 = 0.0305, wR2 = 0.0702, GooF = 1.1199, T = 298(2) K) is characterized by an ReO3 analogous arrangement of rubidium centered [TlI4] tetrahedra. The cuboctahedral cavities of this structure are filled with crystal water molecules and additional disordered rubidium cations. |