Acta Cryst. (2012). E68, o3171
[ doi:10.1107/S1600536812042791 ]
Abstract: In the title compound, C13H16N4O2, the pyrazole ring forms a dihedral angle of 50.61 (6)° with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8 (7)° out of the plane of the phenyl ring. In the crystal, the molecules are linked by N-HN and N-HO hydrogen bonds, forming sheets in the bc plane. In addition, a weak C-HN interaction is observed.
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