Rhenium pentafluoride
| Names | |
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| Other names
Rhenium(V) fluoride
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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| 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
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Osmium pentafluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
[edit]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
[edit]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
[edit]- ^ Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 192. ISBN 978-0-323-14847-4. Retrieved 6 April 2023.
- ^ 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.
- ^ Colton, Ray (1965). The Chemistry of Rhenium and Technetium. Interscience Publishers. p. 59. ISBN 978-0-470-16650-5. Retrieved 6 April 2023.