Acta Cryst. (2012). E68, o3318
[ doi:10.1107/S160053681204528X ]
Abstract: The title compound, C5H6ClN3O, is essentially planar with a maximum deviation of 0.0256 (11) Å for all non-H atoms. In the crystal, adjacent molecules are linked by a pair of N-HN hydrogen bonds, forming an inversion dimer with an R22(8) ring motif. The dimers are further linked via N-HO hydrogen bonds into an undulating sheet structure parallel to the bc plane.
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