Acta Cryst. (2003). E59, o878-o880  [ doi:10.1107/S1600536803011267 ]

L-Leucinium oxalate

K. Rajagopal, R. V. Krishnakumar, M. Subha Nandhini, R. Malathi, S. S. Rajan and S. Natarajan

Abstract: In the title compound, C₆H₁₄NO₂⁺·C₂HO₄^-, the leucine molecule exists in the cationic form, with a protonated amino group and an uncharged carboxylic acid group. Oxalic acid exists in the mono-ionized state. Pseudo-inversion centres relate the leucinium cations and semi-oxalate anions. The leucinium and semi-oxalate ions form hydrogen-bonded, double-layered chains, extending parallel to the b axis. The leucinium cations are arranged in these double layers on opposite sides leading to alternating hydrophobic and hydrophilic layers.

Online 31 May 2003

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