1,3-Diphenyl-1H-pyrazole-4-carbaldehyde

Abstract

There are four molecules in the asymmetric unit of the title compound, C16H12N2O. The dihedral angle between the phenyl rings in the molecules are 22.2 (2), 22.4 (2), 25.1 (3) and 41.9 (2)°. In the crystal, molecules form dimers due to intermolecular C—H...O hydrogen bonds, which result in one R22(10) and two R21(7) ring motifs. Weak aromatic π–π stacking [centroid–centroid separation = 3.788 (3) Å] and C—H...π interactions may also consolidate the packing.