Synthesis and X‐Ray Study of Single Crystals of K5(Cd0.5Zr1.5)(MoO4)6 Triple Molybdate

Single crystals of K5(Cd0.5Zr1.5)2(MoO4)6 molybdate have been grown. Its composition and crystal structure have been established from X‐ray diffraction data CAD‐4 automatic diffractometer, MoKα radiation, 940 F(hkl), R = 0.0234. The crystals have a trigonal unit cell a = b = 10.624(1)A, c = 37.694(6)A, V = 3684.5(8)A3, and space group R3c. The 3D mixed framework of the molybdate structure is formed by two kinds of Mo tetrahedra and (Cd, Zr) octahedra joined by shared O vertices. The large cavities in the framework are occupied by K atoms of three kinds. The distribution of Cd2+ and Zr4+ cations over two crystallographic positions has been refined.