title: (E)-4-(4-Hydr-oxy-3-nitro-benzyl-idene-amino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one.
abstract: In the title compound, C(18)H(16)N(4)O(4), the dihedral angles between the central pyrazole ring and the pendant substituted and unsubstituted aromatic rings are 4.73 (12) and 44.24 (14)°, respectively. An intra-molecular O-H⋯O hydrogen bond occurs. In the crystal structure, an inter-molecular C-H⋯O inter-action may help to consolidate the packing and a short intra-molecular C-H⋯O contact also occurs.
authors.affiliation: Department of Chemistry, Lishui University, Lishui 323000, ZheJiang, People's Republic of China.
authors.forename: Chun-Niu
authors.initials: CN
authors.lastname: Zhang
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Yang