Europium(II) fluoride
Chemical compound
From Wikipedia, the free encyclopedia
Europium(II) fluoride is an inorganic compound with a chemical formula EuF2. It was first synthesized in 1937.[1]
| Names | |
|---|---|
| IUPAC name
Europium(II) fluoride | |
| Other names
Europium difluoride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.203.721 |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| EuF2 | |
| Molar mass | 189.96 |
| Appearance | dark yellowish solid[1] |
| Density | 6.495 g·cm−3 |
| Structure[2] | |
| Fluorite structure | |
| Fm3m (No. 225) | |
a = 584.23 pm | |
Formula units (Z) |
4 |
| Hazards | |
| GHS labelling: | |
 | |
| Danger | |
| H301 | |
| P264, P270, P301+P310, P321, P330, P405, P501 | |
| Related compounds | |
Other anions |
Europium(II) bromide Europium(II) chloride Europium(II) iodide |
Other cations |
Samarium(II) fluoride Thulium(II) fluoride Ytterbium(II) fluoride |
Related compounds |
Europium(III) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Production
Europium(II) fluoride can be produced by reducing europium(III) fluoride with metallic europium or hydrogen gas.[3]
Properties
Europium(II) fluoride is a bright yellowish solid with a fluorite structure.[3]
EuF2 can be used to dope a trivalent rare-earth fluoride, such as LaF3, to create a vacancy-filled structure with increased conductivity over a pure crystal. Such a crystal can be used as a fluoride-specific semipermeable membrane in a fluoride selective electrode to detect trace quantities of fluoride.[4][5]