title: N'-[(E)-4-(Diethyl-amino)benzyl-idene]-4-nitro-benzohydrazide monohydrate.
abstract: In the title compound, C(18)H(20)N(4)O(3)·H(2)O, the two aromatic rings are linked through a methyl-idenehydrazide fragment, which is fully extended with C-C-N-N, C-N-N=C and N-N=C-C torsion angles of 179.4 (2), 174.7 (2) and 178.3 (2)°, respectively. The dihedral angle between the two aromatic rings is 7.01 (8)°. In the crystal structure, the water of hydration is involved in extensive hydrogen bonding. Inter-molecular O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds link the components of the structure into a two-dimensional network and additional stabilization is provided by weak inter-molecular C-H⋯O hydrogen bonds.
authors.forename: Tanveer
authors.initials: T
authors.lastname: Ahmad
authors.forename: Muhammad
authors.initials: M
authors.lastname: Zia-Ur-Rehman
authors.forename: Hamid Latif
authors.initials: HL
authors.lastname: Siddiqui
authors.forename: Syed Umar Farooq
authors.initials: SU
authors.lastname: Rizvi
authors.forename: Masood
authors.initials: M
authors.lastname: Parvez