Cesium hydride
Crystal structure | ||||||||||
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__ Cs + __ H - | ||||||||||
Crystal system |
cubic |
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Space group |
Fm 3 m (No. 225) |
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Lattice parameters |
a = 6.365 Å |
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General | ||||||||||
Surname | Cesium hydride | |||||||||
Ratio formula | CsH | |||||||||
Brief description |
colorless solid |
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External identifiers / databases | ||||||||||
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properties | ||||||||||
Molar mass | 133.91 g mol −1 | |||||||||
Physical state |
firmly |
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density |
3.41 g cm −3 |
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Melting point |
528 ° C |
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solubility |
reacts violently 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 . |
Cesium hydride is an inorganic chemical compound of cesium from the group of hydrides .
Extraction and presentation
Cesium hydride can be obtained by reacting cesium with hydrogen.
properties
Cesium hydride is a colorless solid that is very sensitive to moisture. It reacts explosively with moist air to form cesium hydroxide and hydrogen. It has a crystal structure of the sodium chloride type with the space group Fm 3 m (space group no. 225) with the lattice constant a = 6.365 Å. At a pressure of 6.5 MPa the phase changes from the NaCl structure to the CsCl type with the constant a = 3.820 Å.
Individual evidence
- ↑ a b c d Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 950.
- ↑ a b 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. 412 ( limited preview in Google Book search).
- ↑ WM Haynes, David R. Lide, Thomas J. Bruno: CRC Handbook of Chemistry and Physics 2012-2013 . CRC Press, 2012, ISBN 1-4398-8049-2 , pp. 4–57 ( 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.
- ↑ IO Bashkin et al. : The structural transition from NaCl to CsCl type in cesium hydride . In: physica status solidi (b) . tape 114 , no. 2 , December 1, 1982, doi : 10.1002 / pssb.2221140252 .