Acta Cryst. (2013). E69, o22
[ doi:10.1107/S1600536812049239 ]
Abstract: In the title compound, C16H18N4O4, the molecule assumes an E conformation with respect to the N=N double bond. The aromatic rings are not coplanar, with a dihedral angle of 7.51 (8)°. The nitro group is tilted by 4.71 (11)° relative to the attached benzene ring. In the crystal, molecules are connected through O-HO hydrogen bonds forming a double-stranded chain parallel to the b axis.
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