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Acta Cryst. (2009). E65, o49-o50 [ doi:10.1107/S1600536808040348 ]
Abstract: The asymmetric unit of the title compound, C8H20N+·C4H5O5-·1.36H2O, contains two independent ion pairs, with similar conformations, and three water molecules of crystallization, one water molecule haing a site-occupancy factor of 0.721 (5). Intramolecular O-H
O hydrogen bonds, involving the hydroxy groups and an O atom of each carboxylate anion, generate five-membered rings involving S(5) ring motifs. In the crystal structure, molecules are linked together by water molecules through four-membered O-HO-HO-H interactions to form one-dimensional infinite chains along the a axis. Since the molecules are also linked into one-dimensional infinite chains along the b axis, molecular sheets parallel to the (001) plane are created. Overall, the crystal structure is stabilized by two intramolecular O-HO hydrogen bonds, nine intermolecular O-HO and ten C-HO hydrogen bonds.
Online 10 December 2008
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