Engineering of a polar crystal structure exclusively by π–π stacking between aryl and polyfluoroaryl groups

Abstract

1-(4-Nitrilo-2,3,5,6-tetrafluorophenyl)benzimidazole crystallizes in the polar space group Cc. The structure arises from the geometry of the molecule which gives columns of π-π stacked nitrilotetrafluorophenyl and benzimidazole groups in two almost orthogonal directions.