 | |
| Names | |
|---|---|
| IUPAC name Uranium(VI) difluoride dioxide | |
| Other names Uranyl difluoride | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.033.529 |
| EC Number |
|
| |
| |
| Properties | |
| UO2F2 | |
| Molar mass | 308.024 g·mol−1 |
| Appearance | brilliant orange solid[citation needed] |
| Density | 6.37 g/cm3[1] |
| Melting point | ? |
| Boiling point | ? |
| very soluble | |
| Hazards | |
| GHS labelling: | |
   | |
| Danger | |
| H300,H330,H373,H411 | |
| Related compounds | |
Related compounds | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Uranyl fluoride is theinorganic compound with the formulaUO2F2. It is most notable as a contaminant in the production ofuranium tetrafluoride.[2]
As shown byX-ray crystallography, the uranyl centersUO2+2 are surrounded by six fluoride ligandsF−.[3]
It is formed in the hydrolysis ofuranium hexafluoride (UF6):
It can also be formed in the hydrofluorination ofuranium trioxide (UO3):
This salt is very soluble in water as well ashygroscopic. It changes in color from brilliant orange to yellow upon hydration. Starting around 300 °C, hydrolysis by the water vapor in air becomes significant, resulting inHF fumes.[citation needed]
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