Abstract
The title compound, dirubidium dimanganese(II) tris(tetraoxomolybdate), Rb2Mn2( MoO4)(3), was prepared by solid-state reactions. The structure can be described as being composed of MnO6 octahedra sharing corners with MoO4 tetrahedra. The three- dimensional framework contains cavities in which the rubidium ions are located. The Rb (+) cations are within distorted nine- and 12- vertex polyhedra. The pairs of different Mn (2+) and Rb (+) cations are each located on threefold rotation axes.. Rb2Mn2(MoO4)3 is isotypic with compounds of the Cs2M2Mo3O12 (M = Ni, Fe) family. A comparative structural description is provided between the structure of the title compound and those of related phases. Differences with structures such as alluaudite are discussed.