title: (2Z)-1-(5-Hy-droxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-3-(4-meth-oxy-anilino)but-2-en-1-one.
abstract: The central residue in the title compound, C(21)H(21)N(3)O(3), is close to planar (r.m.s. deviation = 0.0753 Å for all non-H atoms from OH to NH inclusive): the hy-droxy, amino and carbonyl groups all lie to the same side of the mol-ecule (the conformation about the ethene bond is Z), facilitating the formation of intra-molecular O-H⋯O and N-H⋯O hydrogen bonds that close S(6) rings. However, overall the mol-ecule is twisted as the terminal aromatic rings are not coplanar with the central plane [dihedral angles = 20.55 (5) and 80.90 (4)° for the N-bound phenyl ring and the meth-oxy-benzene ring, respectively]. The dihedral angle between the rings is 82.14 (7)°. Supra-molecular layers in the ac plane mediated by C-H⋯π inter-actions are found in the crystal.
authors: Abdullah M
authors: AM
authors: Asiri
authors: Abdulrahman O
authors: AO
authors: Al-Youbi
authors: Hassan M
authors: HM
authors: Faidallah
authors: Seik Weng
authors: SW
authors: Ng
authors: Edward R T
authors: ER
authors: Tiekink