Acta Cryst. (2010). E66, o117 [ doi:10.1107/S1600536809051319 ]
Abstract: In the cation of the title compound, C9H11N2O4+·ClO4-, the conformation is stabilized by an intramolecular N-HO hydrogen bond. In the crystal packing, centrosymmetrically related cations interact through intermolecular O-HO hydrogen bonds involving the carboxy groups, forming dimers. The dimers and the perchlorate anions are further linked into layers parallel to the ab plane by C-HO and N-HO hydrogen-bonding interactions.
Online 12 December 2009
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