Synthesis and characterization of new vanadates of antimony, ASbV2O8 (A = K, Rb, Tl or Cs)†

Abstract

Four new vanadates of antimony, KSbV₂O₈ 1, RbSbV₂O₈ 2, TlSbV₂O₈ 3 and CsSbV₂O₈ 4, have been prepared by solid state synthesis and structurally characterized by single crystal X-ray diffraction. Compounds 1 to 3 have a three-dimensional (SbV₂O₈^–)_∞ anionic framework with one dimensional channels occupied by counter cations. Compound 4 has two dimensional (SbV₂O₈^–)_∞ layers interleaved with Cs⁺ ions. Both types of anionic frameworks are built from corner connected SbO₆ octahedra and VO₄ tetrahedra. The spectroscopic data are briefly discussed.