Acta Cryst. (2014). E70, o89-o90 [ doi:10.1107/S1600536813033989 ]
Abstract: The molecule of the title hydrazine derivative, C15H14N4O6, is essentially planar, the dihedral angle between the substituted benzene rings being 2.25 (9)°. The ethoxy and hydroxy groups are almost coplanar with their bound benzene ring [r.m.s. deviation = 0.0153 (2) Å for the ten non-H atoms]. Intramolecular N-HO and O-HOethoxy hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal, molecules are linked by O-HOnitro hydrogen bonds into chains propagating in . Weak aromatic - interactions, with centroid-centroid distances of 3.8192 (19) and 4.0491 (19) Å, are also observed.
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