organic compounds
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The asymmetric unit of the title compound, C19H15N3O2, contains two molecules, both of which show an E conformation of the imine bond. The dihedral angles between the phenyl rings in the phenylhydrazine groups are 86.09 (6) and 83.41 (5)° in the two molecules. The 4-nitrobenzene rings show torsion angles of 4.4 (2) and 10.9 (2)° from the two C=N—N planes. In the crystal, C—Hπ interactions and C—HO hydrogen bonds are observed growing along the a, b and c axes, resulting in a complex supramolecular array.