Lead(II) fluoride is the inorganic compound with the formula PbF2. It is a white solid. The compound is polymorphic, at ambient temperatures it exists in orthorhombic (PbCl2 type) form, while at high temperatures it is cubic (Fluorite type).[2]
Preparation
Lead(II) fluoride can be prepared by treating lead(II) hydroxide or lead(II) carbonate with hydrofluoric acid:[3]
- Pb(OH)2 + 2 HF → PbF2 + 2 H2O
Alternatively, it is precipitated by adding hydrofluoric acid to a lead(II) salt solution, or by adding a fluoride salt to a lead salt, such as potassium fluoride to a lead(II) nitrate solution, [4]
- 2 KF + Pb(NO3)2 → PbF2 + 2 KNO3
or sodium fluoride to a lead(II) acetate solution.
- 2 NaF + Pb(CH3COO)2 → PbF2 + 2 NaCH3COO
It appears as the very rare mineral fluorocronite.[5][6]
Uses
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/PbF2_Crystal_SIPM.png/220px-PbF2_Crystal_SIPM.png)
2 scintillator crystals used in the Muon g−2 experiment.
Lead(II) fluoride is used in low melting glasses, in glass coatings to reflect infrared rays, in phosphors for television-tube screens, and as a catalyst for the manufacture of picoline.[3] The Muon g−2 experiment uses PbF
2 scintillators in conjunction with silicon photomultipliers.[7]
References
- ^ NIST-data review 1980
- ^ Haines, J.; Léger, J. M.; Schulte, O. (1998-04-01). "High-pressure isosymmetric phase transition in orthorhombic lead fluoride". Physical Review B. 57 (13). American Physical Society (APS): 7551–7555. Bibcode:1998PhRvB..57.7551H. doi:10.1103/physrevb.57.7551. ISSN 0163-1829.
- ^ a b Carr, Dodd S. "Lead Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a15_249. ISBN 978-3527306732.
- ^ Arnold Hollemann, Egon Wiberg, 101st ed., de Gruyter 1995 Berlin; ISBN 3-11-012641-9
- ^ "Fluorocronite".
- ^ "List of Minerals". 21 March 2011.
- ^ Grange, J.; et al. (Muon g−2 Collaboration) (Jan 27, 2015). "Muon (g−2) Technical Design Report". arXiv:1501.06858. Bibcode:2015arXiv150106858G.
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