2KBrO4 + 2[BrF6][AsF6] → 2BrO3F + 2BrF5 + O2 + 2K[AsF6]
Potassium perbromate react with hexafluorobromine(VII) hexafluoroarsenate(V) to produce fluoride-trioxide bromine, bromine(V) fluoride, oxygen and potassium hexafluoroarsenate(V). The reaction is conducted in a liquid ammonia.