Definition of "pentafluoride" []

• Any fluoride containing five fluorine atoms in each molecule. (noun)

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• "He chose the superacid antimon-pentafluoride SbF5."
• "A superacid can for example be prepared from hydrogen fluoride (HF) and antimony pentafluoride"
• "Dissolving alkyl halides at low temperature in hydrogen fluoride-antimon pentafluoride (HF-SbF5), which is"