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Crystal structure of poly[μ-aqua-bis(μ3-2-methylpropanoato-κ4 O:O,O':O')dipotassium].

ABSTRACT: The structure of the title compound, [K2(C4H7O2)2(H2O)] n , is composed of stacked sandwiches, which are formed by cation-oxygen bilayers surrounded by methyl-ethyl hydro-phobic chains. These sandwiches are held together by van der Waals inter-actions between the methyl-ethyl groups. The methyl-ethyl groups are disordered over two positions with occupancies 0.801 (3):0.199 (3). The potassium cations are coordinated by seven O atoms, which form an irregular polyhedron. There is a water mol-ecule, the oxygen atom of which is situated in a special position on a twofold axis (Wyckoff position 4e). The water H atoms are involved in Owater-H⋯Ocarbox-yl hydrogen bonds of moderate strength. These hydrogen bonds are situated within the cation-oxygen, i.e. hydro-philic, bilayer.

SUBMITTER: Fabry J 

PROVIDER: S-EPMC7534236 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Crystal structure of poly[μ-aqua-bis(μ<sub>3</sub>-2-methylpropanoato-κ<sup>4</sup> <i>O</i>:<i>O</i>,<i>O</i>':<i>O</i>')dipotassium].

Fábry Jan J   Samolová Erika E  

Acta crystallographica. Section E, Crystallographic communications 20200922 Pt 10

The structure of the title compound, [K<sub>2</sub>(C<sub>4</sub>H<sub>7</sub>O<sub>2</sub>)<sub>2</sub>(H<sub>2</sub>O)] <sub><i>n</i></sub> , is composed of stacked sandwiches, which are formed by cation-oxygen bilayers surrounded by methyl-ethyl hydro-phobic chains. These sandwiches are held together by van der Waals inter-actions between the methyl-ethyl groups. The methyl-ethyl groups are disordered over two positions with occupancies 0.801 (3):0.199 (3). The potassium cations are coordinat  ...[more]

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