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Rhenium pentafluoride is a binary inorganic compound of rhenium and fluorine with the chemical formula ReF₅. This is a salt of rhenium and hydrofluoric acid.

Synthesis

Rhenium pentafluoride can be synthesised by the reduction of rhenium hexafluoride with hydrogen, rhenium, or tungsten:

2ReF₆ + H₂ → 2ReF₅ + 2HF

5ReF₆ + Re → 6ReF₅

6ReF₆ + W → 6ReF₅ + WF₆

Physical properties

Rhenium pentafluoride forms yellow-green crystals of orthorhombic crystal system, cell parameters a = 0.57 nm, b = 1.723 nm, c = 0.767 nm.

Rhenium pentafluoride reacts with water.

Rhenium pentafluoride is volatile. The compound consists of dimers of composition Re₂F₁₀.

References

1. Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 192. ISBN 978-0-323-14847-4. Retrieved 6 April 2023.
2. Hawkins, Donald T. (6 December 2012). Binary Fluorides: Free Molecular Structures and Force Fields A Bibliography (1957–1975). Springer Science & Business Media. p. 50. ISBN 978-1-4684-6147-3. Retrieved 6 April 2023.
3. Colton, Ray (1965). The Chemistry of Rhenium and Technetium. Interscience Publishers. p. 59. ISBN 978-0-470-16650-5. Retrieved 6 April 2023.

• Fluorides
• Rhenium compounds