Europium (II) sulfide
Crystal structure | ||||||||||||||||
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__ Eu 2+ __ S 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Europium (II) sulfide | |||||||||||||||
other names |
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Ratio formula | EuS | |||||||||||||||
Brief description |
black solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 184.03 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
5.7 g cm −3 |
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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 (II) sulfide is an inorganic chemical compound of europium from the group of sulfides .
Extraction and presentation
Europium (II) sulfide can be produced directly by reacting europium and sulfur .
It is also possible to display it by reacting hydrogen sulfide with europium (III) oxide at 1050 ° C or europium (II) oxalate at 800 ° C.
properties
Europium (II) sulfide is a black solid that is stable in dry air, is practically insoluble in water and dissolves in acids with the development of hydrogen sulfide. Slow hydrolysis occurs in moist air . When heated in air, the compound is oxidized to the oxide sulfate. In an inert environment, decomposition takes place from 1470 ° C. Europium (II) sulfide has a cubic crystal structure of the sodium chloride type, is a semiconductor and ferromagnetic below 16.5 K.
Individual evidence
- ↑ a b c Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 3125 ( limited preview in Google Book search).
- ^ William M. Haynes: CRC Handbook of Chemistry and Physics, 93rd Edition . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–63 ( limited preview in Google Book search).
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ a b c Georg Brauer , with the assistance of Marianne Baudler a . a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 1098 .
- ↑ azom.com: Europium Sulfide (EuS) Semiconductors , accessed on May 10, 2014