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CsGa(HAsO4)2, the first Ga representative of the RbAl(HAsO4)2 structure type
Karolina Schwendtner1, Uwe Kolitsch2
1Institute for Chemical Technology and Analytics, Division of Structural Chemistry, TU Wien, Getreidemarkt 9/164-SC, 1060 Vienna, Austria.
Abstract:
The crystal structure of hydro-thermally synthesized (T = 493 K, 7 d) caesium gallium bis-[hydrogen arsenate(V)], CsGa(HAsO4)2, was solved by single-crystal X-ray diffraction. The compound crystallizes in the common RbAl(HAsO4)2 structure type (R32) and consists of a basic tetra-hedral-octa-hedral framework topology that houses Cs+ cations in its channels. The AsO4 tetra-hedron is disordered over two positions with site occupancy factors of 0.946 (1) and 0.054 (1). Strong hydrogen bonds strengthen the network. The structure was refined as inversion twin.
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