Citation: Sch\"afer, Marion C.; Bobev, Svilen (2013). On the possibility for Rb- and Eu-cation ordering in type-I clathrates: synthesis and homogeneity range of the novel compounds Rb~8{--~x}Eu~x~(In,Ge)~46~ (0.6 {\/leq} x {\/leq} 1.8). Acta Crystallographica Section C, 69, pp. 1457-1461.
Formula: Eu0.61 Ge37.12 In8.88 Rb7.39
Chemical name:Heptarubidium europium nonaindium heptatriacontagermanide