title: N'-[(E)-4-Benz-yloxy-2-hy-droxy-benzyl-idene]-4-nitro-benzohydrazide monohydrate.
abstract: The title compound, C(21)H(17)N(3)O(5)·H(2)O, exists in the keto form with an E conformation with respect to the azomethine double bond. The twist angles between the aromatic rings are in the range 4.67 (10)-17.54 (10)°. A water mol-ecule of solvation is present in the lattice. A conventional intra-molecular O-H⋯N hydrogen bond increases the rigidity of the mol-ecule. Inter-molecular O-H⋯O, N-H⋯O and C-H⋯O hydrogen-bonding inter-actions establish a supra-molecular linkage among the mol-ecules in the crystal structure. There are also C-H⋯π inter-actions present.
authors.forename: Bibitha
authors.initials: B
authors.lastname: Joseph
authors.forename: M
authors.initials: M
authors.lastname: Sithambaresan
authors.forename: M R Prathapachandra
authors.initials: MR
authors.lastname: Kurup