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Praseodymium(III) fluoride
Names
	Other names Praseodymium trifluoride
Identifiers
CAS Number	13709-46-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	75500;
ECHA InfoCard	100.033.853
EC Number	237-254-9;
PubChem CID	50925288;
UNII	X3MG2Y9URW ;
CompTox Dashboard (EPA)	DTXSID2065593 ;
	InChI InChI=1S/3FH.Pr/h3*1H;/q;;;+3/p-3 Key: BOTHRHRVFIZTGG-UHFFFAOYSA-K;
	SMILES [F-].[F-].[F-].[Pr+3];
Properties
Chemical formula	PrF3
Appearance	green crystalline solid
Density	6.267 g·cm−3
Melting point	1370 °C
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H315, H319, H331, H335, H413
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Praseodymium(III) fluoride is an inorganic compound with the formula PrF₃, being the most stable fluoride of praseodymium.

Preparation

The reaction between praseodymium(III) nitrate and sodium fluoride will obtain praseodymium(III) fluoride as a green crystalline solid:^[3]

Pr(NO₃)₃ + 3 NaF → 3 NaNO₃ + PrF₃

There are also literature reports on the reaction between chlorine trifluoride and various oxides of praseodymium (Pr₂O₃, Pr₆O₁₁ and PrO₂), where praseodymium(III) fluoride is the only product. The reaction between bromine trifluoride and praseodymium oxide left in the air for a period of time also produces praseodymium(III) fluoride, but the reaction is incomplete; the reaction between praseodymium(III) oxalate hydrate and bromine trifluoride can obtain praseodymium(III) fluoride, and carbon is also produced from this reaction.^[4] Praseodymium(III) fluoride can also be obtained by reacting praseodymium oxide and sulfur hexafluoride at 584 °C.^[5]

Properties

Physical

Praseodymium(III) fluoride forms pale green crystals of trigonal system^[6] (or hexagonal system^[7]), space group P 3c1,^[6] (or P 6/mcm^[7]), cell parameters a = 0.7078 nm, c = 0.7239 nm, Z = 6, structure like cerium(III) fluoride (CeF₃).

Chemical

Praseodymium(III) fluoride is a green, odourless, hygroscopic solid that is insoluble in water.^[8]

Uses

Praseodymium(III) fluoride is used as a doping material for laser crystals.^[9]

References

^ E. A. Krivandina, Z. I. Zhmurova, B. P. Sobolev, T. M. Glushkova, D. F. Kiselev, M. M. Firsova, A. P. Shtyrkova (October 2006). "Growth of R 1 − y Sr y F3 − y crystals with rare earth elements of the cerium subgroup (R = La, Ce, Pr, or Nd; 0 ≤ y ≤ 0.16) and the dependence of their density and optical characteristics on composition". Crystallography Reports. 51 (5): 895–901. doi:10.1134/S106377450605021X. ISSN 1063-7745. S2CID 189794019.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ H. von Wartenberg. The melting points of neodymium and praseodymium fluorides. Naturwissenschaften, 1941. 29: 771. ISSN 0028-1042.
^ Lin Ma, Wei-Xiang Chen, Yi-Fan Zheng, Jie Zhao, Zhude Xu (May 2007). "Microwave-assisted hydrothermal synthesis and characterizations of PrF3 hollow nanoparticles". Materials Letters. 61 (13): 2765–2768. doi:10.1016/j.matlet.2006.04.124. Retrieved 2019-03-26.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Popov, Alexander I.; Glockler, George (Mar 1952). "Observations on the Fluorination of Praseodymium and Neodymium Compounds". Journal of the American Chemical Society. 74 (5): 1357–1358. doi:10.1021/ja01125a521. ISSN 0002-7863.
^ OPALOVSKII, A. A.; LOBKOV, E. U.; ERENBURG, B. G.; ZAKHAR'EV, YU. V.; SHINGAREV, V. G. (1973-01-16). "ChemInform Abstract: RK. VON SF6 MIT SELTENERDMETALLOXIDEN". Chemischer Informationsdienst. 4 (3). doi:10.1002/chin.197303045. ISSN 0009-2975.
^ ^a ^b Химическая энциклопедия. Vol. 4. М.: Советская энциклопедия. 1995. ISBN 5-85270-092-4. {{cite book}}: Unknown parameter |agency= ignored (help)
^ ^a ^b Справочник химика. Vol. 1 (2-е изд., испр ed.). М.-Л.: Химия. 1966. {{cite book}}: Unknown parameter |agency= ignored (help)
^ Praseodymium(III) fluoride at AlfaAesar, accessed on 2023-12-22 (PDF) (JavaScript required).^{[dead link]}
^ Shalibeik, Hotan (2007). Rare-earth-doped fiber lasers and amplifiers (1. Aufl ed.). Göttingen: Cuvillier. ISBN 978-3-86727-467-8.

[1] E. A. Krivandina, Z. I. Zhmurova, B. P. Sobolev, T. M. Glushkova, D. F. Kiselev, M. M. Firsova, A. P. Shtyrkova (October 2006). "Growth of R 1 − y Sr y F3 − y crystals with rare earth elements of the cerium subgroup (R = La, Ce, Pr, or Nd; 0 ≤ y ≤ 0.16) and the dependence of their density and optical characteristics on composition". Crystallography Reports. 51 (5): 895–901. doi:10.1134/S106377450605021X. ISSN 1063-7745. S2CID 189794019.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[2] H. von Wartenberg. The melting points of neodymium and praseodymium fluorides. Naturwissenschaften, 1941. 29: 771. ISSN 0028-1042.

[3] Lin Ma, Wei-Xiang Chen, Yi-Fan Zheng, Jie Zhao, Zhude Xu (May 2007). "Microwave-assisted hydrothermal synthesis and characterizations of PrF3 hollow nanoparticles". Materials Letters. 61 (13): 2765–2768. doi:10.1016/j.matlet.2006.04.124. Retrieved 2019-03-26.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[4] Popov, Alexander I.; Glockler, George (Mar 1952). "Observations on the Fluorination of Praseodymium and Neodymium Compounds". Journal of the American Chemical Society. 74 (5): 1357–1358. doi:10.1021/ja01125a521. ISSN 0002-7863.

[5] OPALOVSKII, A. A.; LOBKOV, E. U.; ERENBURG, B. G.; ZAKHAR'EV, YU. V.; SHINGAREV, V. G. (1973-01-16). "ChemInform Abstract: RK. VON SF6 MIT SELTENERDMETALLOXIDEN". Chemischer Informationsdienst. 4 (3). doi:10.1002/chin.197303045. ISSN 0009-2975.

[:1-6] Химическая энциклопедия. Vol. 4. М.: Советская энциклопедия. 1995. ISBN 5-85270-092-4. {{cite book}}: Unknown parameter |agency= ignored (help)

[:2-7] Справочник химика. Vol. 1 (2-е изд., испр ed.). М.-Л.: Химия. 1966. {{cite book}}: Unknown parameter |agency= ignored (help)

[8] Praseodymium(III) fluoride at AlfaAesar, accessed on 2023-12-22 (PDF) (JavaScript required).^{[dead link]}

[9] Shalibeik, Hotan (2007). Rare-earth-doped fiber lasers and amplifiers (1. Aufl ed.). Göttingen: Cuvillier. ISBN 978-3-86727-467-8.

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