<div class="csl-bib-body">
<div class="csl-entry">Schwendtner, K., & Kolitsch, U. (2018). M<sup>+</sup>M<sup>3</sup><sup>+</sup>₂As(HAsO₄)₆ (M<sup>+</sup>M<sup>3</sup><sup>+</sup> = TlGa, CsGa, CsAl): three new metal arsenates containing AsO₆ octahedra. <i>Acta Crystallographica Section E: Crystallographic Communications</i>, <i>74</i>(8), 1163–1167. https://doi.org/10.1107/s2056989018010721</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/144462
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dc.description.abstract
The crystal structures of hydrothermally synthesized (T = 493 K, 7 d) thallium(I) digallium arsenic(V) hexakis[hydrogenarsenate(V)], TlGa₂As(HAsO₄)₆, caesium digallium arsenic(V) hexakis[hydrogenarsenate(V)], CsGa₂As(HAsO₄)₆, and caesium dialuminium arsenic(V) hexakis[hydrogenarsenate(V)], CsAl₂As(HAsO₄)₆, were solved by single-crystal X-ray diffraction. The three compounds are isotypic and adopt the structure type of RbAl₂As(HAsO₄)₆ (R\overline{3}c), which itself represents a modification of the RbFe(HPO₄)₂ structure type and consists of a tetrahedral-octahedral framework in which the slightly disordered M⁺ cations are located in channels. The three new compounds contain AsO₆ octahedra assuming the topological role of M³+O₆ octahedra. The As-O bond lengths are among the shortest As-O bond lengths known so far in AsO₆ octahedra.
