Growth and Crystal Structure of Binary Molybdate CsFe(MoO4)2

CsFe(MoO4)(2) single crystals have been grown by solution-melt crystallization with a charge-to-solvent ratio of 1 : 3 (with Cs2Mo3O10 used as a solvent). The crystal structure of this compound has been refined by X-ray diffraction (X8 APEX automatic diffractometer, MoK alpha radiation, 356 F(hkl), R = 0.0178). The trigonal unit cell has the following parameters: a = b = 5.6051(2) angstrom, c = 8.0118(4) angstrom, V = 217.985(15) angstrom(3), Z = 1, rho(calc) = 3.875 g/cm(3), and sp. gr. P (3) over bar m1. The structure is composed of alternating layers of FeO6 octahedra (with MoO4 tetrahedra attached by sharing vertices) and CsO12 icosahedra.