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A tetragonal polymorph of caesium hydroxide monohydrate, CsOH·H2O, from X-ray powder data

Publication date2002
Abstract

Tetragonal caesium hydroxide monohydrate, CsOH x H(2)O, a clathrate hydrate, is a polymorph of three known hexagonal or pseudo-hexagonal modifications. It was obtained as a by-product in a high-pressure experiment. Whether it is a high-pressure polymorph, however, remains to be verified. The Cs atoms are situated in cavities of the form of a bicapped pentagonal prism, within an infinite three-dimensional hydrogen-bonded oxygen framework that is locally identical to layers found in the hexagonal modifications. The Cs atom and one of the two H atoms are at sites with (macro)4m2 symmetry, the O atom has mm site symmetry and the second H atom has 2/m symmetry

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Citation (ISO format)
CERNY, Radovan, FAVRE-NICOLIN, Vincent, BERTHEVILLE, Bernard. A tetragonal polymorph of caesium hydroxide monohydrate, CsOH·H<sub>2</sub>O, from X-ray powder data. In: Acta crystallographica. Section C, Crystal structure communications, 2002, vol. 58, n° 3, p. i31–i32. doi: 10.1107/S0108270101021928
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ISSN of the journal0108-2701
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