Europium (III) fluoride
Crystal structure | |||||||||||||
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__ Eu 3+ __ F - | |||||||||||||
Crystal system | |||||||||||||
Space group |
Pnma (No. 62) |
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General | |||||||||||||
Surname | Europium (III) fluoride | ||||||||||||
other names |
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Ratio formula | EuF 3 | ||||||||||||
Brief description |
white solid |
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External identifiers / databases | |||||||||||||
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properties | |||||||||||||
Molar mass | 208.96 g mol −1 | ||||||||||||
Physical state |
firmly |
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Melting point |
1390 ° C |
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boiling point |
2280 ° C |
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solubility |
almost insoluble in water |
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safety instructions | |||||||||||||
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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 .
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.
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.
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.