Acta Cryst. (2004). E60, i74-i76  [ doi:10.1107/S1600536804011353 ]

Tripotassium dibismuth(III) tris[arsenate(V)], K₃Bi₂(AsO₄)₃

C. Falah, H. Boughzala and T. Jouini

Abstract: The title compound was prepared by a solid-state reaction at 1123 K. Its structure is closely related to that of alluaudite. The main structural feature is the presence of infinite chains of edge-sharing Bi₂O₁₀ dimers, which are linked by AsO₄ tetrahedra to form a framework enclosing two types of channels where K⁺ cations reside. The X1 site of the alluaudite structure is occupied by K⁺, whereas the X2 site is empty.

Online 15 May 2004

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