Dysprosium(III) fluoride
{{Chembox
| Name = Dysprosium(III) fluoride
| ImageFile =
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| Section1 = {{Chembox Identifiers
| CASNo = 13569-80-7
| PubChem = 83587
| ChemSpiderID = 75417
| EINECS = 236-992-9
| StdInChI=1S/Dy.3FH/h;3*1H/q+3;;;/p-3
| StdInChIKey = FWQVINSGEXZQHB-UHFFFAOYSA-K
| SMILES = F[Dy](F)F
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| Section2 = {{Chembox Properties
| Formula = DyF3
| MolarMass = 219.50
| Appearance = White crystalline powder
| Density = 6.9 g/cm3
| MeltingPt = 1,740 °C
| BoilingPt =
| Solubility = }}
| Section3 = {{Chembox Hazards
| GHSPictograms = {{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|315|319|335}}
| PPhrases = {{P-phrases|}}
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| Section8 = {{Chembox Related
| OtherAnions = Dysprosium(III) chloride, Dysprosium(III) bromide, Dysprosium(III) iodide
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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.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.
:{{chem2|DyCl3 + 3 HF → DyF3 + 3 HCl}}
:{{chem2|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.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).
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: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.
:{{chem2|Dy2O3 + 6 HF → 2 DyF3 + 3 H2O}}
Properties
Dysprosium(III) fluoride is a white, odorless solid that is insoluble in water.{{Alfa|13656|Datum=2023-12-22}} It has an orthorhombic crystal structure with the space group Pnma (space group no. 62).{{Cite book |last1=Ans |first1=Jean d' |url=https://books.google.com/books?id=ssy59etLaksC&pg=PA442 |title=Taschenbuch für Chemiker und Physiker |last2=Lax |first2=Ellen |date=1998 |publisher=Springer |isbn=978-3-540-60035-0 |language=de}}
References
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{{Dysprosium compounds}}
{{fluorides}}
{{Lanthanide halides}}
{{inorganic-compound-stub}}