title: (2Z)-3-(4-Fluoro-anilino)-1-(5-hy-droxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)but-2-en-1-one.
abstract: The central carbonyl group in the title compound, C(20)H(18)FN(3)O(2), forms amine-hy-droxy N-H⋯O and hy-droxy-hy-droxy O-H⋯O hydrogen bonds, leading to two S(6) rings. The N-bound phenyl ring is coplanar with the five-membered ring to which it is attached [dihedral angle = 6.27 (10)°], but an overall twist in the mol-ecule is evident, the dihedral angle between the terminal phenyl and benzene rings being 27.30 (10)°. Mol-ecules aggregate into a three-dimensional architecture via C-H⋯F, C-H⋯O and C-H⋯π inter-actions.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.forename: Hassan M
authors.initials: HM
authors.lastname: Faidallah
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink