Cerium(III) fluoride

Names
IUPAC name

Cerium(III) fluoride

Other names

Cerium trifluoride

Identifiers

CAS Number

* 7758-88-5 Y

PubChem CID

* 24457

UNII |

* 1GCT2G09AN Y

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 pictograms |
NFPA 704 (fire diamond)  |

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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## References

1. ↑ Holleman-Wiberg, 102. edition, p. 1942[full citation needed]
2. ↑ "Fluocerite-(Ce)". https://www.mindat.org/min-1567.html.
3. ↑ "List of Minerals". 21 March 2011. https://www.ima-mineralogy.org/Minlist.htm.
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. doi:10.1117/1.oe.56.6.067105. Bibcode: 2017OptEn..56f7105V. https://www.researchgate.net/publication/317486975.
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. doi:10.3390/ma13235324. PMID 33255447. Bibcode: 2020Mate...13.5324V.
6. ↑ 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.
7. ↑ 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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Cerium compounds

Cerium(III)|

* CeBr3
* Ce2(CO3)3
* CeCl3
* CeF3
* CeI3
* Ce(OH)3
* Ce2O3
* Ce2(SO4)3
* Ce(NO3)3

| Organocerium(III)|

* Ce(acac)3
* Ce2(C2O4)3
* Ce(CH3SO3)3

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Cerium(III,IV)|

* Ce3O4

Cerium(IV)|

* (NH4)4Ce(SO4)4•2 H2O
* (NH4)2Ce(NO3)6
* CeB6
* Ce(NO3)4
* CeO2
* Ce(SO4)2

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Salts and covalent derivatives of the fluoride ion

HF |  |  |  | He

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LiF | BeF2 | BF
BF3
B2F4 | CF4
other compounds | NF3
FN3
N2F2
N2F4
NF5§  | F2O
F2O2
other compounds | F2 | Ne
NaF | MgF2 | AlF
AlF3 | SiF4 | P2F4
PF3
PF5 | S2F2
SF2
SF4
SF6 | ClF
ClF3
ClF5 | Ar
KF | CaF
CaF2 | ScF3 | TiF2
TiF3
TiF4 | VF2
VF3
VF4
VF5 | CrF2
CrF3
CrF4
CrF5
CrF6§  | MnF2 | FeF2
FeF3 | CoF2
CoF3 | NiF2 | CuF
CuF2 | ZnF2 | GaF2
GaF3 | GeF2
GeF4 | AsF3
AsF5 | Se2F2
SeF4
SeF6 | BrF
BrF3
BrF5 | KrF2
RbF | SrF
SrF2 | YF3 | ZrF3
ZrF4 | NbF4
NbF5 | MoF2
MoF3
MoF4
MoF5
MoF6 | TcF4
TcF6 | RuF3
RuF5
RuF6 | RhF3
RhF5
RhF6 | PdF2 | AgF | CdF2 | InF
InF2
InF3 | SnF2
SnF4 | SbF3
SbF5 | Te3F2
TeF4
TeF6 | IF
IF3</br>IF5</br>IF7 | XeF2
XeF4
XeF6
CsF | BaF2 |  | HfF4 | TaF5 | WF2
WF3
WF4
WF5
WF6 | Re3F9
ReF4
ReF5
ReF6
ReF7 | OsF4
OsF5
OsF6 | IrF2
IrF3
IrF4
IrF5
IrF6 | PtF2
PtF4
PtF5
PtF6 | AuF
AuF3
Au2F10
AuF5•F2 | Hg2F2
HgF2
HgF4 | TlF | PbF2
PbF4 | BiF3
BiF5 | PoF2
PoF4
PoF6 | AtF  | RnF2
FrF | RaF2 |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
LaF3 | CeF3
CeF4 | PrF3 | NdF2,
NdF3 | PmF3 | SmF2,
SmF3 | EuF2,
EuF3 | GdF3 | TbF3 | DyF2,
DyF3 | HoF3 | ErF3 | TmF2
TmF3 | YbF2
YbF3 | LuF3
AcF3 | ThF4 | PaF5 | UF3
UF4
UF5
UF6 | NpF4
NpF6 | PuF3
PuF6 | AmF2
AmF3 | CmF3 | BkF3 | CfF3 | EsF3 | Fm  | Md  | No  | LrF3

§ means the substance has not been made.

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