Krypton hexafluoride

Krypton hexafluoride
Names
	Other names Krypton(VI) fluoride
Identifiers
Properties
Chemical formula	F6Kr
Molar mass	197.788 g·mol−1
Appearance	claimed to be white crystalline solid
Related compounds
Related compounds	Xenon hexafluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Krypton hexafluoride is an inorganic chemical compound of krypton and fluorine with the chemical formula KrF₆. It is still a hypothetical compound.[1]

History

In 1933, Linus Pauling predicted[2] that the heavier noble gases would be able to form compounds with fluorine and oxygen. He also predicted the existence of krypton hexafluoride.[3] So far, out of all possible krypton fluorides, only krypton difluoride (KrF₂) has been actually formed. It is a white crystalline solid that decomposes spontaneously at normal temperatures.[4] This fact leads to suggest that krypton hexafluoride is also an unstable compound.

References

Dixon, David A.; Wang, Tsang-Hsiu; Grant, Daniel J.; Peterson, Kirk A.; Christe, Karl O.; Schrobilgen, Gary J. (1 November 2007). "Heats of Formation of Krypton Fluorides and Stability Predictions for KrF₄ and KrF₆ from High Level Electronic Structure Calculations". Inorganic Chemistry. 46 (23): 10016–10021. doi:10.1021/ic701313h. ISSN 0020-1669. PMID 17941630. Retrieved 28 March 2023.
Williams, Jeffrey H. (28 September 2017). Crystal Engineering: How Molecules Build Solids. Morgan & Claypool Publishers. p. 4–1. ISBN 978-1-68174-625-8. Retrieved 28 March 2023.
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 28 March 2023.
Burbank, R. D.; Falconer, W. E.; Sunder, W. A. (22 December 1972). "Crystal Structure of Krypton Difluoride at −80°C". Science. 178 (4067): 1285–1286. doi:10.1126/science.178.4067.1285. ISSN 0036-8075. PMID 17792123. S2CID 96692996. Retrieved 28 March 2023.

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[1] Dixon, David A.; Wang, Tsang-Hsiu; Grant, Daniel J.; Peterson, Kirk A.; Christe, Karl O.; Schrobilgen, Gary J. (1 November 2007). "Heats of Formation of Krypton Fluorides and Stability Predictions for KrF₄ and KrF₆ from High Level Electronic Structure Calculations". Inorganic Chemistry. 46 (23): 10016–10021. doi:10.1021/ic701313h. ISSN 0020-1669. PMID 17941630. Retrieved 28 March 2023.

[2] Williams, Jeffrey H. (28 September 2017). Crystal Engineering: How Molecules Build Solids. Morgan & Claypool Publishers. p. 4–1. ISBN 978-1-68174-625-8. Retrieved 28 March 2023.

[3] 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 28 March 2023.

[4] Burbank, R. D.; Falconer, W. E.; Sunder, W. A. (22 December 1972). "Crystal Structure of Krypton Difluoride at −80°C". Science. 178 (4067): 1285–1286. doi:10.1126/science.178.4067.1285. ISSN 0036-8075. PMID 17792123. S2CID 96692996. Retrieved 28 March 2023.