Europium (III) fluoride

Crystal structure
	__ Eu 3+ __ F -
Crystal system	orthorhombic
Space group	Pnma (No. 62)
General
Surname	Europium (III) fluoride
other names	Europium fluoride; Europium trifluoride;
Ratio formula	EuF 3
Brief description	white solid
External identifiers / databases
EC number	237-368-9
ECHA InfoCard	100.033.957
Wikidata	Q14956810
properties
Molar mass	208.96 g mol −1
Physical state	firmly
Melting point	1390 ° C
boiling point	2280 ° C
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 302-312-332-315-319-335
	P: 261-280-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Europium (III) fluoride (EuF ₃ ) is a salt of the rare earth metal europium .

Extraction and presentation

Europium (III) fluoride can be obtained by reacting europium (III) oxide with hydrogen fluoride .

{\ displaystyle \ mathrm {Eu_ {2} O_ {3} +6 \ HF \ longrightarrow 2 \ EuF_ {3} +3 \ H_ {2} O}}

properties

Europium (III) fluoride is a white solid that is insoluble in water. It has an orthorhombic crystal structure with the space group Pnma (space group no. 62) . Above 647 ° C, europium (III) fluoride assumes the trigonal LaF ₃ structure with the space group P 3 c 1 (No. 165) and the lattice constants a = 692 pm and c = 709 pm. Template: room group / 62 Template: room group / 165

use

Europium (III) fluoride is used for the production of mixed metal fluorides and fluoride glasses. By reaction with europium or hydrogen can europium (II) fluoride are recovered.

{\ displaystyle \ mathrm {2 \ EuF_ {3} + Eu \ longrightarrow 3 \ EuF_ {2}}}

{\ displaystyle \ mathrm {2 \ EuF_ {3} + H_ {2} \ longrightarrow 2 \ EuF_ {2} +2 \ HF}}

Individual evidence

↑ ^a ^b ^c Roger Blachnik (Ed.): Pocket book for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 446 ( limited preview in Google Book search).
↑ ^a ^b ^c ^d ^e ^f data sheet Europium (III) fluoride, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on September 29, 2013 ( PDF ).
↑ Data sheet Europium (III) fluoride, anhydrous, REacton®, 99.98% (REO) from AlfaAesar, accessed on September 29, 2013 ( PDF )(JavaScript required) .
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 254.
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 255.

[Lax-1] Roger Blachnik (Ed.): Pocket book for chemists and physicists . Volume III: Elements, Inorganic Compounds and Materials, Minerals . founded by Jean d'Ans, Ellen Lax. 4th, revised and revised edition. Springer, Berlin 1998, ISBN 3-540-60035-3 , pp. 446 ( limited preview in Google Book search).

[Sigma-2] ↑ ^a ^b ^c ^d ^e ^f data sheet Europium (III) fluoride, anhydrous, powder, 99.99% trace metals basis from Sigma-Aldrich , accessed on September 29, 2013 ( PDF ).

[Alfa-3] Data sheet Europium (III) fluoride, anhydrous, REacton®, 99.98% (REO) from AlfaAesar, accessed on September 29, 2013 ( PDF )(JavaScript required) .

[brauer-4] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 254.

[gbrauer-5] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 255.