Acta Cryst. (2006). E62, o463-o465  [ doi:10.1107/S1600536805043047 ]

L-Prolinamidium hydrogensquarate

T. Kolev, D. Yancheva, M. Spiteller, W. S. Sheldrick and H. Mayer-Figge

Abstract: Cations of the title compound, C₅H₁₁N₂O⁺·C₄HO₄^-, are connected by intermolecular N(amide)-HO(amide) hydrogen bonds into helical chains, whereas anions are interlinked by strong O(hydroxyl)-HO hydrogen bonds into chains. These two distinct chains are interconnected by both N(amide)-HO and N(ammonium)-HO hydrogen bonds into a three-dimensional framework. One of the ammonium protons is involved in a three-centre hydrogen bond.

Online 7 January 2006

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