Acta Cryst. (2009). E65, o2542 [ doi:10.1107/S1600536809038227 ]
Abstract: The title compound, C8H10N2O2, crystallizes as two independent molecules linked by N-HN and N-HO hydrogen bonds into a linear chain running along the a axis of the monoclinic unit cell. The intra- and intermolecular hydrogen bonds are described as a two-ring R22(10) motif. The six-membered R11(6) rings formed by the intramolecular interactions are almost planar (r.m.s. deviations 0.06 and 0.08 Å). In one molecule, the aromatic and hydrogen-bonded rings are oriented at 4.8 (2)°, whereas in the other molecule these rings are oriented at 6.1 (4)°.
Online 26 September 2009
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