On the basis of diffraction data, the structure of the compound, RbCl·nCuCl (where n was equal to about 1.5), was found to belong to the space group, I¯43d. The structure was based upon Rb polyhedra with 9 vertices which were joined, via common faces, to give Rb6Cl33 clusters. These were joined, via their edges, to give a 3-dimensional framework. Four crystallographically different Cu atoms lay in distorted tetrahedra. One of these positions was 40% statistically populated by Cu atoms. The temperature dependence of the conductivity of the crystals was measured at temperatures of between 20 and 120C. The ionic conductivity at 100C was equal to 4 x 10-5S/cm, and the activation energy was equal to 0.45eV.

A.M.Golubev, N.I.Sorokin, V.E.Ivanov-Shits: Kristallografiya, 1985, 30[5], 890-4 (Soviet Physics - Crystallography, 1985, 30[5], 516-8)