Janus head type lone pair-π-lone pair and S•••F•••S interactions in retaining hexafluorobenzene

A series of eight tris-arylthiotriazines were synthesized to study the lone pair-p interaction between the triazine ring centroid of these molecules and halogenated solvents. All the eight compounds were characterized using H-1 and C-13 NMR spectroscopy and single crystal X-ray diffraction techniques. All these compounds show interesting structural properties in the solid state. Unprecedented Janus head type lp center dot center dot center dot pi center dot center dot center dot lp and S center dot center dot center dot F center dot center dot center dot S interactions were observed between one of the tris-arylthiotriazines and hexafluorobenzene.