title: (E)-3-(4-Chloro-phen-yl)-3-[3-(4-chloro-phen-yl)-1H-pyrazol-1-yl]prop-2-enal.
abstract: In the title compound, C(18)H(12)Cl(2)N(2)O, the pyrazole ring is almost planar [r.m.s. deviation = 0.002 Å] while the two chloro-phenyl rings are twisted out from the plane of the pyrazole ring, making dihedral angles of 5.3 (1) and 65.34 (4)°. In the crystal, centrosymmetric R(2) (2)(24) dimers are formed about crystallographic inversion centres through a pair of C-H⋯Cl inter-actions. These dimers are further linked through a C-H⋯O hydrogen bond, forming a C(8) chain extending along the a axis. C-H⋯π inter-actions are also observed.
authors.forename: V
authors.initials: V
authors.lastname: Susindran
authors.forename: S
authors.initials: S
authors.lastname: Athimoolam
authors.forename: S Asath
authors.initials: SA
authors.lastname: Bahadur
authors.forename: R
authors.initials: R
authors.lastname: Manikannan
authors.forename: S
authors.initials: S
authors.lastname: Muthusubramanian