Barium telluride
Crystal structure | ||||||||||||||||
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__ Ba 2+ __ Te 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Barium telluride | |||||||||||||||
Ratio formula | BaTe | |||||||||||||||
Brief description |
white to yellow solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 264.93 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
5.13 g cm −3 |
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Melting point |
2070 ° C |
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Refractive index |
2.408 |
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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 . Refractive index: Na-D line , 20 ° C |
Barium telluride is an inorganic chemical compound of barium from the group of tellurides . In addition to this, two further barium tellurides are known: barium digelluride BaTe 2 and barium tritelluride BaTe 3 .
Extraction and presentation
Barium telluride can be obtained by reacting barium with tellurium .
Representation by reducing barium tellurate is also possible .
properties
Barium telluride is a white to yellow solid. It has a cubic crystal structure with the space group Fm 3 m (space group no. 225) .
use
Barium telluride is used as a semiconductor.
Individual evidence
- ↑ a b c d e f Richard C. Ropp: Encyclopedia of the Alkaline Earth Compounds . Newnes, 2012, ISBN 0-444-59553-8 , pp. 189 ( limited preview in Google Book search).
- ↑ a b c d Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 2016, ISBN 978-1-4398-1462-8 , pp. 58 ( limited preview in Google Book search).
- ↑ Gerald J. Lapeyre, Eugene B. Hensley: Melting Point and Growth of Barium Telluride Single Crystals. In: Journal of Applied Physics. 36, 1965, p. 2054, doi : 10.1063 / 1.1714401 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ G. CORDIER, C. SCHWIDETZKY, H. SCHAEFER: ChemInform Abstract: BARIUM TELLURIDE (BATE3), THE FIRST BINARY ALKALINE EARTH POLYTELLURIDE. In: Chemical Information Service. 15, 1984, doi : 10.1002 / chin.198441009 .
- ↑ R. Blachnik: Pocket book for chemists and physicists Volume 3: Elements, inorganic compounds and materials, minerals . Springer-Verlag, 2013, ISBN 978-3-642-58842-6 , pp. 1363 ( limited preview in Google Book search).
- ↑ AMERICAN ELEMENTS ®: Barium Telluride | AMERICAN ELEMENTS ® , accessed April 19, 2019