Acta Cryst. (2004). E60, o1715-o1716 [ doi:10.1107/S1600536804021786 ]
Abstract: The structure of the title compound, C7H5ClN2O, comprises a planar molecule that associates via N-HN interactions to form R22(8) graph set hydrogen-bonded dimers, while N-HCl associations from the second 2-amino H atom create a two-dimensional hydrogen-bonding network containing C22(8) helical chains.
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