Xenon difluoride
Xenon difluoride is a powerful fluorinating agent with the chemical formula XeF
2, and one of the most stable xenon compounds. Like most covalent inorganic fluorides it is moisture-sensitive. It decomposes on contact with water vapor, but is otherwise stable in storage. Xenon difluoride is a dense, colourless crystalline solid.
| Names | |
|---|---|
| IUPAC names
Xenon difluoride Xenon(II) fluoride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.850 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| F2Xe | |
| Molar mass | 169.290 g·mol−1 |
| Appearance | White solid |
| Density | 4.32 g/cm3, solid |
| Melting point | 128.6 °C (263.5 °F; 401.8 K) |
| 25 g/L (0 °C) | |
| Vapor pressure | 6.0×102 Pa |
| Structure | |
| parallel linear XeF2 units | |
| Linear | |
| 0 D | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
254 J·mol−1·K−1 |
Std enthalpy of formation (ΔfH⦵298) |
−108 kJ·mol−1 |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Corrosive to exposed tissues. Releases toxic compounds on contact with moisture. |
| GHS labelling: | |
| Danger | |
| H272, H301, H314, H330 | |
| P210, P220, P221, P260, P264, P270, P271, P280, P284, P301+P310+P330, P303+P361+P353, P304+P340+P310, P305+P351+P338, P331, P363, P370+P378, P403+P233, P405, P501 | |
| NFPA 704 (fire diamond) | |
| Safety data sheet (SDS) | PELCHEM MSDS |
| Related compounds | |
Other anions |
Xenon dichloride Xenon dibromide |
Other cations |
Krypton difluoride Radon difluoride |
Related compounds |
Xenon tetrafluoride Xenon hexafluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
It has a nauseating odour and low vapor pressure.
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