Synthesis and Crystal Structure of Tl2[(S0.6Se0.4)O4]Te(OH)6

Abstract

The crystal structure of the thallium sulfate selenate tellurate Tl2[(S0.6Se0.4)O4]Te(OH)6 was determined with single-crystal X-ray diffraction data. The title compound crystallizes in the monoclinic system with the P21/c space group. The unit-cell dimensions at 298 K are a = 12.3580(10)A, b = 7.2310(10)A, c = 11.9860(10)A, β = 111.090(10)°, V = 999.33(19)A3, Dx = 5.029 g/cm3, and Z = 4. The R value is 0.047 for 1799 reflections. The anions are disposed in a number of sheets of pure (S,Se)O4 tetrahedra, alterning with sheets of pure Te(OH)6 octahedra. All of those planes are intercalated in a bidimensional arrangement by Tl+ cations.