Thulium(III) fluoride explained

Thullium(III) fluoride is an inorganic compound with the chemical formula TmF₃.

Production

It can be produced by reacting thulium(III) sulfide and hydrofluoric acid, followed by thermal decomposition:^[1]

3 Tm₂S₃ + 20 HF + (2 + 2x)H₂O → 2 (H₃O)Tm₃F₁₀·xH₂O↓ + 9 H₂S↑ (x=1.7)

(H₃O)Tm₃F₁₀ → 3 TmF₃ + HF↑ + H₂O↑

Thulium(III) oxide reacts with fluorinating agents such as hydrogen fluoride,^[2] nitrogen trifluoride^[3] xenon difluoride^[4] to create thullium(III) fluoride as well, although the reaction with nitrogen trifluoride is incomplete and produces a mixture of TmOF and TmF₃.

External links

• Does Boiling Water Remove Fluoride?

Notes and References

1. O.V. Andrrev, I.A. Razumkova, A.N. Boiko. March 2018. Synthesis and thermal stability of rare earth compounds REF₃, REF₃·nH₂O and (H₃O)RE₃F₁₀·nH₂O (RE = Tb − Lu, Y), obtained from sulphide precursors. Journal of Fluorine Chemistry. en. 207. 77–83. 10.1016/j.jfluchem.2017.12.001. 2019-03-26.
2. Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band I, Ferdinand Enke, Stuttgart 1975,, S. 254.
3. Randall D. Scheele, Bruce K. McNamara, Andrew M. Casella, Anne E. Kozelisky, Doinita Neiner. February 2013. Thermal NF3 fluorination/oxidation of cobalt, yttrium, zirconium, and selected lanthanide oxides. Journal of Fluorine Chemistry. en. 146. 86–97. 10.1016/j.jfluchem.2012.12.013. 2019-03-26.
4. Brekhovskikh, M. N.; Popov, A. I.; Kiselev, Yu. M.; Fedorov, V. A.; Sobolev, B. P. Interaction of xenon difluoride with rare earth element, zirconium, and hafnium oxides. Vysokochistye Veshchestva, 1987. 5: 83-86. .