Acta Cryst. (2011). E67, o1905 [ doi:10.1107/S1600536811025566 ]
Abstract: The title compound, C6H6N2O2, is approximately planar with an r.m.s. deviation for the non-H atoms of 0.052 Å. In the crystal, a two-dimensional array in the bc plane is stabilized by O-HN and N-HO hydrogen bonds.
Online 6 July 2011
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