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| Other names
Lead difluoride plumbous fluoride | |
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| 3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.029.089 
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| PubChem CID | |
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InChI
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SMILES
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| Properties | |
| Chemical formula | PbF2 |
| Molar mass | 245.20 g/mol |
| Appearance | white powder |
| Odor | odorless |
| Density | 8.445 g/cm (orthorhombic) 7.750 g/cm (cubic) |
| Melting point | 824 °C (1,515 °F; 1,097 K) |
| Boiling point | 1,293 °C (2,359 °F; 1,566 K) |
| Solubility in water | 0.057 g/100 mL (0 °C) 0.0671 g/100 mL (20 °C) |
| Solubility product (Ksp) | 2.05 x 10 (20 °C) |
| Solubility | soluble in nitric acid and hydrochloric acid; insoluble in acetone and ammonia |
| Magnetic susceptibility (χ) | −-58.1·10 cm/mol |
| Structure | |
| Crystal structure | Fluorite (cubic), cF12 |
| Space group | Fm3m, No. 225 |
| Hazards | |
| Lethal dose or concentration (LD, LC): | |
| LD50 (median dose) | 3031 mg/kg (oral, rat) |
| Related compounds | |
| Other anions | Lead(II) chloride Lead(II) bromide Lead(II) iodide |
| Other cations | Difluorocarbene Difluorosilylene Difluorogermylene Stannous fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
 N verify (what is ?)
Infobox references
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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).
Preparation
Lead(II) fluoride can be prepared by treating lead(II) hydroxide or lead(II) carbonate with hydrofluoric acid:
- 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,
- 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.
Uses
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. The Muon g−2 experiment uses PbF
2 scintillators in conjunction with silicon photomultipliers.
It also serves as a oxygen scavenger in high-temperature fluorine chemistry, as plumbous oxide is relatively volatile.
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.
- ^ 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. Fermi National Accelerator Laboratory (Report). arXiv:1501.06858. Bibcode:2015arXiv150106858G. FERMILAB-FN-0992-E. Via inSPIRE
- Beeks, Kjeld; Sikorsky, Tomas; Rosecker, Veronika; Pressler, Martin; Schaden, Fabian; Werban, David; Hosseini, Niyusha; Rudischer, Lukas; Schneider, Felix; Berwian, Patrick; Friedrich, Jochen; Hainz, Dieter; Welch, Jan; Sterba, Johannes H.; Kazakov, Georgy; Schumm, Thorsten (2023). "Growth and characterization of thorium‑doped calcium fluoride single crystals" (PDF). Scientific Reports. 13 (1): 3897–. Bibcode:2023NatSR..13.3897B. doi:10.1038/s41598-023-31045-5. PMC 9995343. PMID 36890210.
| Lead compounds | |
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| Pb(II) | |
| Pb(II,IV) | |
| Pb(IV) | |