Rhenium. VIII. Studies on the Formation of Oxofluororhenates (VII) by Conductometry and Thermometry

From conductometric and thermometric titrations of potassium perrhenate with aqueous hydrofluoric acid the existence of the complex species ReO₄F]^2? has been inferred. Attempts to isolate Oxofluororhenates(VII) from aqueous medium under varying conditions have, however, not been successful.