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Terbium Trifluoride
Terbium(III) fluoride is an inorganic compound with chemical formula TbF3. It is hard to dissolve in water. It can be produced by reacting terbium(III) carbonate and 40% hydrofluoric acid at 40°C. Uses Terbium(III) fluoride is used for producing metallic terbium Terbium is a chemical element; it has Symbol (chemistry), symbol Tb and atomic number 65. It is a silvery-white, rare earth element, rare earth metal that is malleable and ductile. The ninth member of the lanthanide series, terbium is a fairly ele ....Schmidt, F. A., Peterson, D. T., & Wheelock, J. T. (1986). U.S. Patent No. 4,612,047. Washington, DC: U.S. Patent and Trademark Office. :2 TbF3 + 3 Ca → 3 CaF2 + 2 Tb References {{Lanthanide halides Terbium compounds Fluorides Lanthanide halides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gadolinium(III) Fluoride
Gadolinium(III) fluoride is an inorganic compound with a chemical formula GdF3. Preparation Gadolinium(III) fluoride can be prepared by heating gadolinium oxide and ammonium bifluoride. The reaction involves two steps: : 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. : GdCl3 + 3 HF + x H2O → GdF3·xH2O + 3 HCl Properties Gadolinium(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). Uses Gadolinium(III) fluoride is used to produce fluoride glass Fluoride glass is a class of non-oxide optical glasses composed of fluorides of various metals. They can contain heavy metals such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |