Cerium(III)_fluoride

Cerium(III) fluoride

Cerium(III) fluoride

Chemical compound

Cerium(III) fluoride (or cerium trifluoride), CeF3, is an ionic compound of the rare earth metal cerium and fluorine.

Quick Facts Names, Identifiers ...

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 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]

More information Fluorine F1 coordination, Fluorine F2 coordination ...

References

  1. [1]
    Holleman-Wiberg, 102. edition, p. 1942[full citation needed]
  2. [2]
    "Fluocerite-(Ce)".
  3. [3]
    "List of Minerals". 21 March 2011.
  4. [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. [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. [6]
    Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. pp. 420–421. ISBN 978-0-19-965763-6.
  7. [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. [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.
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