Acta Cryst. (2009). E65, o462  [ doi:10.1107/S1600536809001974 ]

Glycinium hydrogen fumarate glycine solvate monohydrate

S. Natarajan, A. Kalyanasundar, J. Suresh, S. A. M. B. Dhas and P. L. N. Lakshman

Abstract: In the title compound, C₂H₆NO₂⁺·C₄H₃O₄^-·C₂H₅NO₂·H₂O, the asymmetric unit contains two glycine residues, one protonated and one in the zwitterionic form, a hydrogen fumarate anion and a water molecule. Through N-HO and O-HO hydrogen bonds, molecules assemble in layers parallel to the (10) plane, one layer of hydrogen fumarate anions alternating with two layers of glycine molecules. In each glycine layer, hydrogen bonds generate an R₄⁴(19) graph-set motif. Further hydrogen bonds involving the water molecule and the hydrogen fumarate anions result in the formation of a three-dimensional network.

Online 4 February 2009

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