The alternate coplanar stacking of benzene and hexafluorobenzene in the solid state is a well-known phenomenon attributed to the nearly equal yet opposite quadrupole moments of the two species. 1 Indeed, the prevalence of the aryl−perfluoroaryl (Ar H −Ar F ) solid-state packing motif has established this couple as a reliable supramolecular synthon for use in crystal engineering, as exemplified by the elegant studies of Coates and co-workers. 2,3 Despite ...
