title: 1-[5-(4-Bromo-phen-yl)-3-(4-fluoro-phen-yl)-4,5-dihydro-1H-pyrazol-1-yl]butan-1-one.
abstract: In the title compound, C(19)H(18)BrFN(2)O, the benzene rings form dihedral angles of 5.38 (7) and 85.48 (7)° with the mean plane of the 4,5-dihydro-1H-pyrazole ring (r.m.s. deviation = 0.0849 Å), which approximates to an envelope conformation with the -CH(2)- group as the flap. The dihedral angle between the benzene rings is 82.86 (7)°. In the crystal, C-H⋯F and C-H⋯O hydrogen bonds link the mol-ecules to form inversion dimers and together these generate chains along [011]. The crystal packing also features C-H⋯π inter-actions.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Wan-Sin
authors.initials: WS
authors.lastname: Loh
authors.forename: M
authors.initials: M
authors.lastname: Sapnakumari
authors.forename: B
authors.initials: B
authors.lastname: Narayana
authors.forename: B K
authors.initials: BK
authors.lastname: Sarojini