4-[(1E)-3-(2,6-Dichloro-3-fluoro­phen­yl)-3-oxoprop-1-en-1-yl]benzonitrile

In the title mol­ecule, C16H8Cl2FNO, the benzene rings form a dihedral angle of 78.69 (8)°. The F atom is disordered over two positions in a 0.530 (3):0.470 (3) ratio. The crystal packing exhibits π–π inter­actions between dichloro-substituted rings [centroid–centroid distance = 3.6671 (10) Å] and weak inter­molecular C—H⋯F contacts

(2E)-1-(2,6-Dichloro-3-fluoro­phen­yl)-3-(4-fluoro­phen­yl)prop-2-en-1-one

In the title compound, C15H8Cl2F2O, the C=C double bond is in the E configuration. In the cyrstal, C—H⋯O hydrogen bonds connect the mol­ecules into chains along the c axis. A π–π inter­action of 3.628 (1) Å is also observed between two polyhalogenated benzene rings. The dichloro­substituted ring exhibits partial disorder over two sets of sites, with site-occupancy factors of 0.573 (3) and 0.427 (3)