Gadolinium(III) fluoride
Appearance
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3D model (JSmol)
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ECHA InfoCard | 100.033.958 |
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CompTox Dashboard (EPA)
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Properties | |
GdF3 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gadolinium(III) fluoride is an inorganic compound with a chemical formula GdF3.
Production
Gadolinium(III) fluoride can be produced by heating gadolinium oxide and ammonium bifluoride, and the reaction have 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