Tetraethylammonium L-malate 1.36-hydrate
Abdul Rahman, Mohd Basyaruddin and Jumbri, Khairulazhar and Sirat, Kamaliah and Kiab, Reza and Hoong, Kun Fun (2009) Tetraethylammonium L-malate 1.36-hydrate. Acta Crystallographica Section E: Structure Reports Online, E65 . o49-o50. ISSN 1600-5368
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—H O—H O—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—H O hydrogen bonds, nine intermolecular O—H O and ten C—H O hydrogen bonds.
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