Rubidium selenide
Crystal structure | ||||||||||||||||
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__ Rb + __ Se 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Rubidium selenide | |||||||||||||||
Ratio formula | Rb 2 Se | |||||||||||||||
Brief description |
colorless, strongly hygroscopic crystals |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 249.89 g · mol -1 | |||||||||||||||
Physical state |
firmly |
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density |
3.22 g cm −3 |
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Melting point |
733 ° C |
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solubility |
reacts with 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 . |
Rubidium selenide is the rubidium salt of hydroselenic acid.
Manufacturing
Rubidium selenide can be made from elemental rubidium and mercury selenide . The synthesis in liquid ammonia is possible from the elements .
properties
Rubidium selenide crystallizes in the cubic crystal system in the space group Fm 3 m (space group no. 225) with the lattice parameters a = 801.0 pm, and 4 formula units per unit cell .
use
Rubidium selenide is used together with cesium selenide in photovoltaic cells.
Individual evidence
- ^ A b Jean D'Ans, Ellen Lax: Paperback for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , p. 692 ( limited preview in Google book search).
- ^ A b Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds . CRC Press, 1995, ISBN 978-0-8493-8671-8 , p. 336 ( limited preview in Google book search).
- ^ William M. Haynes: CRC Handbook of Chemistry and Physics . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 83 ( limited preview in Google Book search).
- ↑ classification and labeling of selenium compounds with the exception of cadmium sulphoselenide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 8, 2020. Harmonized
- ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the indicated labeling it falls under the group entry selenium compounds with the exception of cadmium sulphoselenide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Alfred Bergmann: About the representation and properties of cesium and rubidium sulfide, selenide and telluride. In: Zeitschr. f. anorg. u. allg. Chem. 1937, 231, 3, pp. 269-280, doi : 10.1002 / zaac.19372310306 .
- ↑ Joseph William Mellor: A comprehensive treatise on inorganic and theoretical chemistry . Longmans & Green, 1963 ( limited preview in Google Book search).
- ^ University of California: Solid State Technology, Volume 4 . Cowan Pub. Corp., 1961 ( limited preview in Google Book search).