(E)-4-Hydr­oxy-N′-(4-nitro­benzyl­idene)benzohydrazide

The mol­ecule of the title compound, C(14)H(11)N(3)O(4), is approximately planar, the dihedral angle between the planes of the two substituted benzene rings being 2.54 (7)°. The mol­ecule exists in a trans configuration with respect to the central methyl­idene unit. In the crystal structure, mol­ecules are linked through inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds, forming layers parallel to (101). The O/N—H⋯O and C—H⋯O inter­actions form a pair of bifurcated acceptor bonds involving the cabon­yl/nitro O atom, generating an R (2) (1)(6) motif.