2,2-difluoro-2-nitroacetic acid

3,3,4,5,6,6-hexafluoro-2-(trifluoromethyl)oxazine

2,2,3,4,5,5-hexafluorothiophene

hexafluorodithio-γ-butyrolactone

hexafluoro-3,6-dihydro-1,2-dithiine