STRUCTURE OF 2RBCL.CUCL2.2H2O

Copper(II) dirubidium tetrachloride dihydrate, M(r) = 412.32, tetragonal, P4(2)/mnm, a = 7.596 (2), c = 8.027 (3) angstrom, V = 463.1 (2) angstrom3, Z = 2, D(x) = 2.957 MgM-3, lambdaBAR(Mo K-alpha) = 0,71073 angstrom, mu = 13.63 mm-1, F(000) = 382, T = 293 K, R (F) = 0.039 for 277 independent reflections with \F(o)\ > 3-sigma\F(o)\. The Cu2+ ion has a distorted octahedral coordination consisting of two CI(1) ions at 3.000 (3) angstrom, two Cl(2) ions at 2.257 (3) angstrom and two water molecules at 1.969 (8) angstrom at the equatorial positions of the square plane. Each of the water molecules is trigonally coordinated and forms two equivalent O-H ... Cl(1) hydrogen bonds with an 0 ... Cl(1) length of 3.130 (7) angstrom. Four Cl(1) and four Cl(2) ions form a distorted cube around the Rb+ ion with Rb-Cl(1) and Rb-Cl(2) lengths of 3.367 (2) and 3.380 (2) angstrom, respectively.