Acta Cryst. (2003). E59, o108-o110  [ doi:10.1107/S1600536802023334 ]

Bis(DL-aspartic acid) oxalate

M. Alagar, R. V. Krishnakumar, M. Subha Nandhini, T. S. Cameron and S. Natarajan

Abstract: In the title compound, 2C₄H₈NO₄⁺·C₂O₄^2-, the amino acid molecule exists in the cationic form and the oxalic acid molecule exists as a doubly charged oxalate anion which lies across an inversion centre in the crystal. The screw-related cations are linked by N-HO hydrogen bonds to form infinite columns parallel to the b axis. The columns are interlinked by anions through O-HO and N-HO hydrogen bonds, forming a three-dimensional network.

Online 10 January 2003

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