Synthesis and Crystal Structure of Tl₂[(S_0.6Se_0.4)O₄]Te(OH)₆

抄録

The crystal structure of the thallium sulfate selenate tellurate Tl₂[(S_0.6Se_0.4)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)Å, b = 7.2310(10)Å, c = 11.9860(10)Å, β = 111.090(10)°, V = 999.33(19)ų, D_x = 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.