Crystal structure investigation of ternary molybdate K5(Mn0.5Zr1.5).(MoO4)6

Crystals of K₅(Mn_0.5Zr_1.5).(MoO₄)₆ were grown, and the crystal structure of this compound was refined in an X-ray diffraction study (CAD-4 automatic diffractometer, MoK_α radiation, 1183 |F(hkl)|, R=0.027). The parameters of the trigonal unit cell are: a=b=10.584(1); c=37.576(3) Å; V=3645.4(3) ų; space group R3c; d_calc=3.606 g/cm³. In the structure, the altermating Mo tetrahedra and (Mn, Zr) octahedra form a three-dimensional mixed framework whosevoids contain potassium atoms of three types. The distribution of the Mn and Zr cations in two crystallographic positions has been refined.