Morpholine-4-carboxamidinium ethyl carbonate

The asymmetric unit of the title salt, C(5)H(12)N(3)O(+)·C(3)H(5)O(3) (−), contains two carboxamidinium and two ethyl carbonate ions. In the crystal, the C—N bond lengths in the central CN(3) 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 CN(3) 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—H⋯O hydrogen bonds between cations and anions generate a two-dimensional network in the ac plane.