Gold Pentafluoride: Structure and Fluoride Ion Affinity


  • This work was supported by the Deutsche Forschungsgemeinschaft and the Fond der Chemischen Industrie.


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The only pentafluoride with a dimeric structure is gold pentafluoride (see structure). According to calculations it has the highest fluoride-ion affinity and thus is the strongest Lewis acid known to date. It decomposes in HF under its own acidity to give AuF3 and F2.