Abstract
A mixed solution of (Cs3.5Rb0.5)[(Se0.85S0.15)O3]2[Te(OH)6]3 (CsRbSSeTe) was synthesized from an aqueous solution of H6TeO6, Rb2SO4, Rb2CO3, Cs2CO3, Cs2SO4 and H2SeO4. The rubidium caesium sulfite selenite tellurate salt crystallizes in the orthorombic system with the Pccn space group. It was analyzed at room temperature using XRD data. The unit cell parameters are a = 19.758(1), b = 9.464(1), c = 14.056(1)Å, Z = 8, V = 2628.22(2)Å3, giving Dx = 3.63 g/cm3. The refinement converged into R = 0.039, Rw = 0.040. The main feature of the atomic arrangements is the coexistence of three and different anions (SO32-, SeO32- and TeO66-) in the unit cell, connected by O-H…O hydrogen bonds, which allow construction of the crystal. The structures are formed by planes of octahedral Te(OH)6. Between these planes, we find mixed planes occupied by trigonal SO32-/SeO32- anions and Cs+/Rb+ cations.
