3-(4-Bromophenyl)-1-phenyl-1H-pyrazole-4-carbaldehyde

Abstract

In the title compound, C 16H 11BrN 2O, the phenyl and chloro-benzene rings are twisted out of the mean plane of the pyrazole ring, forming dihedral angles of 13.70 (10) and 36.48 (10)°, respectively. The carbaldehyde group is also twisted out of the pyrazole plane [the C-C-C-O torsion angle is 7.9 (3)°]. A helical supra-molecular chain along the b axis and mediated by C-H⋯O interactions is the most prominent feature of the crystal packing.