Cesium hydride

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Crystal structure
Structure of cesium hydride
__ Cs +      __ H -
Crystal system

cubic

Space group

Fm 3 m (No. 225)Template: room group / 225

Lattice parameters

a = 6.365  Å

General
Surname Cesium hydride
Ratio formula CsH
Brief description

colorless solid

External identifiers / databases
CAS number 13772-47-9
PubChem 139281
Wikidata Q219211
properties
Molar mass 133.91 g mol −1
Physical state

firmly

density

3.41 g cm −3

Melting point

528 ° C

solubility

reacts violently with water

safety instructions
GHS hazard labeling
no classification available
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. Template: room group / 225

Individual evidence

  1. 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.
  2. 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).
  3. 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).
  4. This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  5. 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 .