Dysprosium(III) fluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.615
EC Number
  • 236-992-9
  • InChI=1S/Dy.3FH/h;3*1H/q+3;;;/p-3
    Key: FWQVINSGEXZQHB-UHFFFAOYSA-K
  • F[Dy](F)F
Properties
DyF3
Molar mass 219.50
Density 7.45 g·cm−3
Hazards
GHS labelling:
GHS07: Exclamation mark
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).
Infobox references

Dysprosium(III) fluoride is an inorganic compound of dysprosium with a chemical formula DyF3.

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]

References

  1. ↑ Wang Ya-jun, Suo Quan-ling, Hao Dong-sheng, Liu Qian, Guo Feng. 稀土氟化物的沉淀方法及组成研究 (in Chinese) (lit. Precipitation and composition of rare earth fluorides). Chinese Rare Earths, 2000, 21 (1): 14-18.
  2. ↑ 孙元平, 贾佩云, 王芳, 等. 水热条件下稀土氟化物形貌的规律性生长[J]. 中国陶瓷, 2013(6).
  3. ↑ 刘文生, 云月厚, 李国栋. 干法氟化制备高纯金属镝的工艺研究[J]. 稀有金属, 2003, 27(1):154-156.
  4. ↑ Dysprosium(III) fluoride at AlfaAesar, accessed on 2023-12-22 (PDF) (JavaScript required).
  5. ↑ Ans, Jean d'; Lax, Ellen (1998). Taschenbuch für Chemiker und Physiker (in German). Springer. ISBN 978-3-540-60035-0.


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