Dysprosium(III) fluoride
Chemical compound
From Wikipedia, the free encyclopedia
Dysprosium(III) fluoride is an inorganic compound of dysprosium with a chemical formula DyF3.
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.615 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| DyF3 | |
| Molar mass | 219.50 |
| Appearance | White crystalline powder |
| Density | 6.9 g/cm3 |
| Melting point | 1,740 °C |
| Hazards | |
| GHS labelling: | |
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| Warning | |
| H315, H319, H335 | |
| Related compounds | |
Other anions |
Dysprosium(III) chloride, Dysprosium(III) bromide, Dysprosium(III) iodide |
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
Dysprosium(III) fluoride can be produced by mixing dysprosium(III) chloride or dysprosium(III) carbonate into 40% hydrofluoric acid.[1]
- DyCl3 + 3 HF → DyF3 + 3 HCl
- Dy2(CO3)3 + 6 HF → 2 DyF3 + 3 H2O + 3 CO2
DyF3 can also be produced by hydrothermal reaction of dysprosium nitrate and sodium tetrafluoroborate at 200 °C.[2]
DyF3 can also be produced when dysprosium oxide and ammonium bifluoride are mixed and heated to 300 °C until the oxide is porous, and continued to heat to 700 °C. When hydrogen fluoride is introduced, a reaction occurs:[3]
- Dy2O3 + 6 HF → 2 DyF3 + 3 H2O
Properties
Dysprosium(III) fluoride is a white, odorless solid that is insoluble in water.[4] It has an orthorhombic crystal structure with the space group Pnma (space group no. 62).[5]
