Praseodymium (III) fluoride
Crystal structure | ||||||||||||||||
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__ Pr 3+ __ F - | ||||||||||||||||
Crystal system | ||||||||||||||||
Space group |
P 6 3 / mcm (No. 193) |
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Coordination numbers |
Pr [9], F [3] |
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General | ||||||||||||||||
Surname | Praseodymium (III) fluoride | |||||||||||||||
other names |
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Ratio formula | PrF 3 | |||||||||||||||
Brief description |
green hexagonal crystals |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 197.90 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
6.3 g cm −3 (20 ° C) |
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Melting point |
1399 ° C |
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boiling point |
2300 ° 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 . |
Praseodymium (III) fluoride (PrF 3 ) is a salt of the rare earth metal praseodymium .
Extraction and presentation
Praseodymium (III) fluoride can be obtained by reacting praseodymium (III) oxide or praseodymium (III, IV) oxide with hydrogen fluoride or chlorine trifluoride .
properties
Praseodymium (III) fluoride is a green, odorless, hygroscopic solid that is insoluble in water.
use
Praseodymium (III) fluoride is used as a doping material in laser crystals.
Individual evidence
- ↑ ML Afanasiev, SP Habuda, AG Lundin: The symmetry and basic structures of LaF 3 , CeF 3 , PrF 3 and NdF 3 . In: Acta Cryst. , 1972 , B28 , pp. 2903-2905, doi : 10.1107 / S0567740872007198 .
- ↑ a b c David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.
- ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 672 ( limited preview in Google Book search).
- ↑ a b Data sheet Praseodymium (III) fluoride, anhydrous, REacton®, 99.9895% (REO) from AlfaAesar, accessed on September 29, 2013 ( PDF )(JavaScript required) .
- ↑ a b Data sheet Praseodymium (III) fluoride, anhydrous, powder, 99.99% trace rare earth metals basis from Sigma-Aldrich , accessed on September 29, 2013 ( PDF ).
- ^ JH Simons: Fluorine Chemistry . Elsevier, 2012, ISBN 0-323-14724-0 , pp. 99 ( limited preview in Google Book search).
- ↑ 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.
- ↑ Hotan Shalibeik: Rare-Earth-Doped Fiber Lasers and Amplifiers . Cuvillier Verlag, 2007, ISBN 3-86727-467-3 , p. 69 ( limited preview in Google Book search).