Approximate geometry predicted computationally
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Names | |
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IUPAC name
Octafluoroxenon
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Other names
Xenon(VIII) fluoride
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Identifiers | |
3D model (JSmol)
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Properties | |
XeF8 | |
Related compounds | |
Related compounds
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Osmium octafluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Xenon octafluoride is a chemical compound of xenon and fluorine with the chemical formula XeF8. This is still a hypothetical compound.[1][2] XeF8 is reported to be unstable even under pressures reaching 200 GPa.[3]
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.[4][5] 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.[6]
The formation of xenon octafluoride has been calculated to be endothermic:[7]