High order stacking of a perfluoro ‘Y-enyne’

The X-ray structure of perfluorophenyl substituted Y-enyne 1 reveals a face-to-face stacking interaction between phenyl and perfluorophenyl groups of different molecules resulting in a high order in the solid state. Acetylene–arene and acetylene–fluorine interactions also contribute to the high order stacking. The X-ray structure suggests a distorted conjugation of the chromophore.