Rhenium pentafluoride
Names
Other names
Rhenium(V) fluoride
Identifiers
3D model (JSmol)
  • InChI=1S/5FH.Re/h5*1H;/q;;;;;+5/p-5
    Key: UKUWGTWCIFEMQK-UHFFFAOYSA-I
  • F[Re](F)(F)(F)F
Properties
F5Re
Molar mass 281.199 g·mol−1
Appearance yellow-green crystals
Density g/cm3
Melting point 48 °C (118 °F; 321 K)
Boiling point 221.3 °C (430.3 °F; 494.4 K)
reacts with water
Structure
orthorhombic
Related compounds
Related compounds
Osmium pentafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Rhenium pentafluoride is a binary inorganic compound of rhenium and fluorine with the chemical formula ReF5.[1] This is a salt of rhenium and hydrofluoric acid.[2]

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[3] 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.