Acta Cryst. (2013). E69, o1180 [ doi:10.1107/S1600536813017418 ]
Abstract: The title molecule, C6H7N3O, is almost planar (r.m.s. deviation = 0.0068 Å) and adopts an E conformation about the C=N double bond. In the crystal, molecules are linked by pairs of strong N-HN hydrogen bonds, forming inversion dimers with R22(10) motifs. The dimers are further linked into C(3) chains through O-HN hydrogen bonds.
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