title: 1-[3-(2-Nitro-phen-yl)-5-phenyl-2-pyrazolin-1-yl]ethanone.
abstract: The title compound, C(17)H(15)N(3)O(3), was prepared from 1-(2-nitro-phen-yl)-3-phenyl-prop-2-en-1-one and hydrazine. The dihedral angle between the benzene and phenyl rings is 74.55 (2)°. The pyrazoline ring is in a slight envelope conformation with the C atom bonded to the phenyl ring forming the flap. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds connect mol-ecules into chains along [100].
authors.forename: Huan-Mei
authors.initials: HM
authors.lastname: Guo
authors.forename: Ben-Yu
authors.initials: BY
authors.lastname: Huang
authors.forename: Xiang
authors.initials: X
authors.lastname: Qin
authors.forename: Huan-Ze
authors.initials: HZ
authors.lastname: Zou
authors.forename: Fang-Fang
authors.initials: FF
authors.lastname: Jian