(2E)-3-(3,5-Dichloro-4-methoxy-2,6-di-methylphenyl)1-(2,4-dichlorophenyl)-prop-2-en-1-one

In the title molecule, C18H14Cl4O2, the angle between the mean planes of the 3,5-dichloro-4-methoxy-2,6-dimethyl-phenyl and 2,4-dichlorophenyl groups is 47.6 (2)degrees. The 4-methoxy group, with a torsion angle of 91.9 (9)degrees, is twisted away from the plane of the 3,5-dichloro-2,6-dimethylphenyl ring in an anticlinal conformation. The ketone O atom of the prop-2-en-1-one group is twisted in a synclinal conformation with the 2,4-dichlorophenyl group [ torsion angle = 45.5 (11)degrees]. The crystal packing is stabilized by intermolecular C-H center dot center dot center dot O hydrogen bonding between the ketone O atom from the prop-2-en-1-one group and an H atom from a nearby 2,4-dichlorophenyl group, which link the molecules into chains along the a axis. The 3,5-dichloro-4-methoxy-2,6-dimethylphenyl and 2,4-dichlorophenyl groups are aligned obliquely parallel to the ac face, with the benzene rings stacked obliquely along the b axis for both groups.