Acta Cryst. (2012). E68, o3431
[ doi:10.1107/S1600536812046922 ]
Abstract: The asymmetric unit of the title salt, C5H12N3O+·C3H5O3-, contains two carboxamidinium and two ethyl carbonate ions. In the crystal, the C-N bond lengths in the central CN3 units of the cations range between 1.324 (2) and 1.352 (2) Å, indicating partial double-bond character. The central C atoms are bonded to the three N atoms in a nearly ideal trigonal-planar geometry and the positive charges are delocalized in the CN3 planes. The morpholine rings are in chair conformations. The C-O bond lengths in both ethyl carbonate ions are characteristic for delocalized double bonds [1.243 (2)-1.251 (2) Å] and typical single bonds [1.368 (2) and 1.375 (2) Å]. In the crystal, N-HO hydrogen bonds between cations and anions generate a two-dimensional network in the ac plane.
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