Acta Cryst. (2009). E65, o2180-o2181  [ doi:10.1107/S1600536809031730 ]

DL-Asparaginium nitrate

N. Moussa Slimane, A. Cherouana, L. Bendjeddou, S. Dahaoui and C. Lecomte

Abstract: In the title compound, C₄H₉N₂O₃⁺·NO₃^-, alternatively called (1RS)-2-carbamoyl-1-carboxyethanaminium nitrate, the asymmetric unit comprises one asparaginium cation and one nitrate anion. The strongest cation-cation O-HO hydrogen bond in the structure, together with other strong cation-cation N-HO hydrogen bonds, generates a succession of infinite chains of R₂²(8) rings along the b axis. Additional cation-cation C-HO hydrogen bonds link these chains into two-dimensional layers formed by alternating R₄⁴(24) and R₄²(12) rings. Connections between these layers are provided by the strong cation-anion N-HO hydrogen bonds, as well as by one weak C-HO interaction, thus forming a three-dimensional network. Some of the cation-anion N-HO hydrogen bonds are bifurcated of the type D-H(A₁,A₂).

Online 19 August 2009

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