structure structure (organic substances) K 9000 19 -039 9,10-Bis(7-fluoro-2,5-dioxaheptyl)triptycene.-The triptycene arene rings are involved in C-H···π -arene hydrogen-bond interactions. -(GAKH, A. A.; BRYAN, J. C.; SACHLEBEN, R. A.; Acta Crystallogr., Sect. C: Cryst.