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Xenon octafluoride

Approximate geometry predicted computationally
Names
IUPAC name Octafluoroxenon
Other names Xenon(VIII) fluoride
Identifiers
CAS Number	17457-75-9
3D model (JSmol)	Interactive image
SMILES F(F)(F)(F)(F)(F)(F)F
Properties
Chemical formula	XeF8
Related compounds
Related compounds	Osmium octafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Xenon octafluoride is a chemical compound of xenon and fluorine with the chemical formula XeF₈. This is still a hypothetical compound. XeF₈ is reported to be unstable even under pressures reaching 200 GPa.

History

The compound was initially predicted in 1933 by Linus Pauling—among other noble gas compounds but which, unlike other xenon fluorides, could probably never be synthesized. This appears to be due to the steric hindrance of the fluorine atoms around the xenon atom. However, scientists continue to try to synthesize it.

Potential synthesis

The formation of xenon octafluoride has been calculated to be endothermic:

Xe + 4 F₂ → XeF₈

References

1. Frlec, Boris; Holloway, John H.; Slivnik, Jože; Šmalc, Andrej; Volavšek, Bogdan; Zemljič, Anton (1 August 1970). "An examination of the possibility of the existence of xenon octafluoride". Journal of Inorganic and Nuclear Chemistry. 32 (8): 2521–2527. doi:10.1016/0022-1902(70)80296-2. ISSN 0022-1902. Retrieved 31 March 2023.
2. Housecroft, Catherine E.; Sharpe, A. G. (2008). Index. Pearson Prentice Hall. p. 1097. ISBN 978-0-13-175553-6. Retrieved 31 March 2023.
3. Luo, Dongbao; Lv, Jian; Peng, Feng; Wang, Yanchao; Yang, Guochun; Rahm, Martin; Ma, Yanming (2019). "A hypervalent and cubically coordinated molecular phase of IF 8 predicted at high pressure". Chemical Science. 10 (8): 2543–2550. doi:10.1039/c8sc04635b. PMC 6385887. PMID 30881685. Retrieved 31 March 2023.
4. Weinstock, Bernard; Weaver, E. Eugene; Knop, Charles P. (December 1, 1966). "The Xenon-Fluorine System". Inorg. Chem. 66 (5): 2189. doi:10.1021/ic50046a026. Retrieved 31 March 2023.
5. Pauling, Linus (May 1933). "The Formulas of Antimonic Acid and the Antimonates". Journal of the American Chemical Society. 55 (5): 1895–1900. doi:10.1021/ja01332a016. ISSN 0002-7863. Retrieved 31 March 2023.
6. Cotton, F. Albert (17 September 2009). Progress in Inorganic Chemistry, Volume 6. John Wiley & Sons. p. 249. ISBN 978-0-470-16657-4. Retrieved 31 March 2023.
7. Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Academic Press. p. 394. ISBN 978-0-12-352651-9. Retrieved 31 March 2023.

• Xenon(VIII) compounds
• Fluorides
• Nonmetal halides
• Hypothetical chemical compounds