title: 1-{3-(4-Chloro-phen-yl)-5-[4-(propan-2-yl)phen-yl]-4,5-di-hydro-1H-pyrazol-1-yl}propan-1-one.
abstract: In the title compound, C21H23ClN2O, the dihedral angle between the benzene rings is 83.2 (6)°, while the mean plane of the pyrazole ring [r.m.s. deviation = 0.043 (1) Å] makes dihedral angles of 3.4 (3) and 86.2 (1)° with the benzene rings. In the crystal, a pair of weak C-H⋯O inter-actions between the benzene ring and the propan-1-one group link the mol-ecules into an inversion dimer with an R 2 (2)(16) graph-set motif. In addition, a weak π-π stacking inter-action [centroid-centroid distance = 3.959 (4) Å] connects the dimers into a tape running along [201].
authors.affiliation: Department of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India.
authors.forename: B
authors.initials: B
authors.lastname: Narayana
authors.affiliation: Department of Studies in Chemistry, Mangalore University, Mangalagangotri 574 199, India.
authors.forename: Vinutha V
authors.initials: VV
authors.lastname: Salian
authors.affiliation: Department of Studies in Chemistry, Industrial Chemistry Section, Mangalore University, Mangalagangotri 574 199, India.
authors.forename: Balladka K
authors.initials: BK
authors.lastname: Sarojini
authors.affiliation: Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA.
authors.forename: Jerry P
authors.initials: JP
authors.lastname: Jasinski