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Cerium(III) fluoride

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Cerium(III) fluoride
Names


IUPAC name Cerium(III) fluoride
Other names Cerium trifluoride
Identifiers
CAS Number	7758-88-5^Y
3D model (JSmol)	Interactive image
ChemSpider	22865
ECHA InfoCard	100.028.947
EC Number	231-841-3
PubChem CID	24457
UNII	1GCT2G09AN^Y
CompTox Dashboard(EPA)	DTXSID8052516
InChI InChI=1S/Ce.3FH/h;3*1H/q+3;;;/p-3 Key: QCCDYNYSHILRDG-UHFFFAOYSA-K
SMILES [F-].[F-].[F-].[Ce+3]
Properties
Chemical formula	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:
Pictograms
NFPA 704 (fire diamond)	3 0 0
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

Cerium(III) fluoride (or cerium trifluoride), CeF₃, is an ionic compound of the rare earth metalcerium andfluorine.

It appears as a mineral in the form offluocerite-(Ce) - a very rare mineral species related mainly topegmatites and rarely tooxidation zones of somepolymetallic ore deposits.^[2]^[3] CeF₃ may be used as aFaraday rotator material in the visible, near-infrared and mid-infrared spectral range.^[4]^[5]

Thecrystal structure of cerium(III) fluoride is described as theLaF₃ ortysonite structure.^[6] It contains9-coordinate cerium ions that adopt an approximatelytricapped 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 fromtrigonal planar topyramidal.^[6]

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

^Holleman-Wiberg, 102. edition, p. 1942^{[full citation needed]}
^"Fluocerite-(Ce)".
^"List of Minerals". 21 March 2011.
^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.
^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.
^^a ^b ^cWells, 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.doi:10.1016/C2009-0-30414-6.ISBN 978-0-08-037941-8.
^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 (1):94–97.Bibcode:1976AcCrB..32...94C.doi:10.1107/S0567740876002380.

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