Structural and conductivity study of a new protonic conductor Cs-0.86(NH4)(1.14)SO4 center dot Te(OH)(6)

摘要

The crystal structure of Cs-0.86(NH4)(1.14)SO4 center dot Te(OH)(6) is determined by X-ray diffraction analysis. The space group is P(2)1/c with a = 13.681(3) angstrom, b = 6.608(1) angstrom, c = 11,362(2), beta = 106.65(3)degrees and Z = 4 at 293 K. The structure is refined to R = 2.9%. The distribution of atoms can be described as isolated TeO6 octahedra and SO4 tetrahedra. The Cs+ and NH4+ cations, occupying the same positions, are located between these polyhedra. The main feature of this structure is the coexistence of two types of anions in the same crystal related by network hydrogen bonds.