Chemistry:Cerium(III) fluoride
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| Names | |
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| IUPAC name
Cerium(III) fluoride
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| Other names
Cerium trifluoride
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| Identifiers | |
PubChem CID
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| Properties | |
| CeF3 | |
| Molar mass | 197.12 g/mol |
| Density | 6.16 g/cm3 (at 20 °C) |
| Melting point | 1,460 °C (2,660 °F; 1,730 K)[1] |
| Related compounds | |
Related compounds
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Lanthanum trifluoride |
| Hazards | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Cerium(III) fluoride (or cerium trifluoride), CeF3, is an ionic compound of the rare earth metal cerium and fluorine.
It appears as a mineral in the form of fluocerite-(Ce) - a very rare mineral species related mainly to pegmatites and rarely to oxidation zones of some polymetallic ore deposits.[2][3] CeF3 may be used as a Faraday rotator material in the visible, near-infrared and mid-infrared spectral range.[4][5]
Structure
The crystal structure of cerium(III) fluoride is described as the LaF
3 or tysonite structure.[6] It contains 9-coordinate cerium ions that adopt an approximately tricapped trigonal prismatic coordination geometry,[7] although it can be considered 11-coordinate if two more distant fluorides are considered part of the cerium coordination environment.[6] The three crystallographically independent fluoride ions are 3-coordinate and range in geometry from trigonal planar to pyramidal.[6]
| Cerium coordination | Fluorine F1 coordination | Fluorine F2 coordination | Fluorine F3 coordination |
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-fluoride-xtal-F3-coord-3D-bs-17.png)
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References
- ↑ Holleman-Wiberg, 102. edition, p. 1942[full citation needed]
- ↑ "Fluocerite-(Ce)". https://www.mindat.org/min-1567.html.
- ↑ "List of Minerals". 21 March 2011. https://www.ima-mineralogy.org/Minlist.htm.
- ↑ Vojna, David; Yasuhara, Ryo; Slezák, Ondřej; Mužík, Jiří; Lucianetti, Antonio; Mocek, Tomáš (2017). "Verdet constant dispersion of CeF3 in the visible and near-infrared spectral range". Optical Engineering 56 (6): 067105. doi:10.1117/1.oe.56.6.067105. Bibcode: 2017OptEn..56f7105V. https://www.researchgate.net/publication/317486975.
- ↑ Vojna, David; Slezák, Ondřej; Yasuhara, Ryo; Furuse, Hiroaki; Lucianetti, Antonio; Mocek, Tomáš (2020). "Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths". Materials 13 (23): 5324. doi:10.3390/ma13235324. PMID 33255447. Bibcode: 2020Mate...13.5324V.
- ↑ 6.0 6.1 6.2 Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. pp. 420–421. ISBN 978-0-19-965763-6.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
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