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—H⋯O hydrogen bonds between cations and anions generate a two-dimensional network in the ac plane.
Highlights
The asymmetric unit of the title salt, C5H12N3O+C3H5O3, contains two carboxamidinium and two ethyl carbonate ions
Planar geometry and the positive charges are delocalized in the CN3 planes
The C—O bond lengths in both ethyl carbonate ions are characteristic for delocalized double bonds [1.243 (2)
Summary
Fakultät Chemie/Organische Chemie, Hochschule Aalen, Beethovenstrasse 1, D73430 Aalen, Germany. H atoms treated by a mixture of independent and constrained refinement max = 0.25 e Å3. The asymmetric unit of the title salt, C5H12N3O+C3H5O3, contains two carboxamidinium and two ethyl carbonate ions. 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. Planar geometry and the positive charges are delocalized in the CN3 planes. The C—O bond lengths in both ethyl carbonate ions are characteristic for delocalized double bonds [1.243 (2)–. N—H O hydrogen bonds between cations and anions generate a two-dimensional network in the ac plane. Data collection: COLLECT (Hooft, 2004); cell refinement: SCALEPACK (Otwinowski & Minor, 1997); data reduction: SCALEPACK; program(s) used to solve structure: SHELXS97. 2005); software used to prepare material for publication: SHELXL97
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