ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.74, ss.1063-1071, 2018 (ESCI)
In the molecule of the title compound, C17H14BrFO3, the aromatic rings are tilted with respect to the enone bridge by 13.63 (14) and 4.27 (15)degrees, and form a dihedral angle 17.91 (17)degrees. In the crystal, centrosymmetrically related molecules are linked by pairs of C-H center dot center dot center dot O hydrogen bonds into dimeric units, forming rings of R-2(2)(14) graph-set motif. The dimers are further connected by weak CH center dot center dot center dot O hydrogen interactions, forming layers parallel to (10 (1) over bar). Hirshfeld surface analysis shows that van der Waals interactions constitute the major contribution to the intermolecular interactions, with H center dot center dot center dot H contacts accounting for 29.7% of the surface.