Gadolinium(III) fluoride is an inorganic compound with a chemical formula GdF3.
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| IUPAC name
Gadolinium(III) fluoride
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| Other names
Gadolinium trifluoride
Gadolinium fluoride | |
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3D model (JSmol)
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| ECHA InfoCard | 100.033.958 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| GdF3 | |
| Related compounds | |
Other anions
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Gadolinium(III) chloride Gadolinium(III) bromide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
editGadolinium(III) fluoride can be prepared by heating gadolinium oxide and ammonium bifluoride. The reaction involves two steps:[1][2]
- Gd2O3 + 6 NH4HF2 → 2 NH4GdF4 + 4 NH4F + 3 H2O
- NH4GdF4 → GdF3 + NH3 + HF
Alternatively, reacting gadolinium chloride with hydrofluoric acid and adding hot water produces GdF3·xH2O (x＝0.53). Anhydrous gadolinium(III) fluoride can then be produced by heating the hydrate with ammonium bifluoride; without the bifluoride, GdOF is formed instead.[3]
- GdCl3 + 3 HF + x H2O → GdF3·xH2O + 3 HCl
Properties
editGadolinium(III) fluoride is a white solid that is insoluble in water. It has an orthorhombic crystal structure with the space group Pnma (space group no. 62).[4]
Uses
editGadolinium(III) fluoride is used to produce fluoride glasses.[5]
References
edit- ^ 郝占忠. 氟化氢铵氟化法合成氟化钆过程的基础研究[J]. 材料科学与工艺, 2010, 18(5):653-656.(in Chinese)
- ^ 郝占忠, 王斌. Gd2O3－NH4HF2系制备氟化钆机制及工艺研究[J]. 稀有金属, 2007, 31(1):97-101.(in Chinese)
- ^ 郝占忠. 湿法氟化制备水合氟化钆的脱水机制及其氧的行为[J]. 有色金属(冶炼部分), 2010(5):36-39. (in Chinese)
- ^ Ans, Jan d'; Ans, Jan d' (1998). Elemente, anorganische Verbindungen und Materialien. Taschenbuch für Chemiker und Physiker / D'Ans (4., neubearb. u. rev. Aufl ed.). Ort nicht ermittelbar: Verlag nicht ermittelbar. ISBN 978-3-540-60035-0.
- ^ "Gadolinium(III) fluoride". Thermo Scientific Chemicals.