Acta Cryst. (2009). E65, o2508-o2509 [ doi:10.1107/S1600536809037313 ]
Abstract: In the title hydrated salt, CH6N3+·C4H5O6-·H2O, the deprotonated carboxyl group is disordered over two positions with a site-occupancy ratio of 0.945 (3):0.055 (3). The bond lengths in the guanidinium cation are intermediate between normal C-N and C=N bond lengths, indicating significant delocalization in this species. In the crystal structure, anions and water molecules are linked into sheets parallel to the ab plane by intermolecular O-HO hydrogen bonds. The linking of the anions and water molecules with the cations by intermolecular N-HO hydrogen bonds creates a three-dimensional network.
Online 19 September 2009
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