Krypton hexafluoride

Krypton hexafluoride
Names
	Other names Krypton(VI) fluoride
Identifiers
3D model (JSmol)	Interactive image;
	InChI InChI=1S/F6Kr/c1-7(2,3,4,5)6 Key: FLBFFHZDXUHIEP-UHFFFAOYSA-N;
	SMILES F[Kr](F)(F)(F)(F)F;
Properties
Chemical formula	F6Kr
Molar mass	197.788 g·mol−1
Appearance	claimed to be white crystalline solid[citation needed]
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] Calculations indicate it is unstable.^[2]

History

In 1933, Linus Pauling predicted that the heavier noble gases would be able to form compounds with fluorine and oxygen. He also predicted the existence of krypton hexafluoride.^[3]^{[verification needed]}^[4] Calculations suggest it would have octahedral molecular geometry.^[1]

So far, out of all possible krypton fluorides, only krypton difluoride (KrF₂) has actually been synthesized.^{[citation needed]}

^ ^a ^b 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.
^ Kurzydłowski, Dominik; Sołtysiak, Magdalena; Dżoleva, Aleksandra; Zaleski-Ejgierd, Patryk (2017-10-28). "High-Pressure Reactivity of Kr and F2—Stabilization of Krypton in the +4 Oxidation State". Crystals. 7 (11): 329. doi:10.3390/cryst7110329. ISSN 2073-4352.
^ 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.
^ 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.

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