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Cerium(III) fluoride

From Wikipedia, the free encyclopedia
Cerium(III) fluoride
Names
IUPAC name
Cerium(III) fluoride
Other names
Cerium trifluoride
Identifiers
ECHA InfoCard 100.028.947 Edit this at Wikidata
UNII
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
Lanthanum trifluoride
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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

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The crystal structure of cerium(III) fluoride is described as the LaF3 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]

Coordination in cerium(III) fluoride[8]
Cerium coordination Fluorine F1 coordination Fluorine F2 coordination Fluorine F3 coordination

References

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  1. ^ Holleman-Wiberg, 102. edition, p. 1942[full citation needed]
  2. ^ "Fluocerite-(Ce)".
  3. ^ "List of Minerals". 21 March 2011.
  4. ^ 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. Bibcode:2017OptEn..56f7105V. doi:10.1117/1.oe.56.6.067105. S2CID 125990210.
  5. ^ 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. Bibcode:2020Mate...13.5324V. doi:10.3390/ma13235324. PMC 7727863. PMID 33255447.
  6. ^ a b c Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. pp. 420–421. ISBN 978-0-19-965763-6.
  7. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
  8. ^ Cheetham, A. K.; Fender, B. E. F.; Fuess, H.; Wright, A. F. (1976). "A powder neutron diffraction study of lanthanum and cerium trifluorides". Acta Crystallogr. B. 32: 94–97. doi:10.1107/S0567740876002380.