![]() Approximate geometry predicted computationally | |
Names | |
---|---|
IUPAC name Octafluoroxenon | |
Other names Xenon(VIII) fluoride | |
Identifiers | |
3D model (JSmol) | |
| |
| |
Properties | |
F8Xe | |
Molar mass | 283.280 g·mol−1 |
Related compounds | |
Related compounds | Osmium octafluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Xenon octafluoride is a chemical compound of xenon and fluorine with the chemical formula Xe F 8. [1] This is still a hypothetical compound. [2] [3] XeF8 is predicted to be unstable even under pressures reaching 200 GPa. [4]
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. [5] [6] 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. [7]
The formation of xenon octafluoride has been calculated to be endothermic: [8]
The doubly charged anion octafluoroxenate XeF2−
8 in which the oxidation number of xenon is only VI, is stable in salts.