Caesium selenide is an inorganic compound of caesium and selenium. It is a selenide, with the chemical formula of Cs2Se. It can be prepared by reacting caesium and selenium. It has an inverse fluorite structure, with space group . There are 4 units per unit cell,[1] and the other selenides from the same group are similar.

Caesium selenide
Caesium selenide
Cs+: __ Se2-: __
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.045.848 Edit this at Wikidata
EC Number
  • 250-448-8
  • InChI=1S/2Cs.Se/q2*+1;-2
    Key: KUBAIENASCDSDJ-UHFFFAOYSA-N
  • [Se-2].[Cs+].[Cs+]
Properties
Cs2Se
Molar mass 344.771
Appearance colourless, highly hygroscopic crystals[1]
Density 4.33 g·cm−3[2]
hydroyses[3]
Hazards
GHS labelling:[4]
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H331, H373, H410
Related compounds
Other anions
Caesium oxide
Caesium sulfide
Caesium sulfide
Caesium polonide
Other cations
lithium selenide
sodium selenide
potassium selenide
rubidium selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

References

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  1. ^ a b Jean D'Ans, Ellen Lax: Taschenbuch für Chemiker und Physiker. 3. Elemente, anorganische Verbindungen und Materialien, Minerale, Band 3. 4. Auflage, Springer, 1997, ISBN 978-3-5406-0035-0, S. 692 ([1], p. 692, at Google Books).
  2. ^ Sommer, Helmut; Hoppe, Rudolf. The crystal structure of cesium sulfide and a remark about cesium selenide, cesium telluride, rubidium selenide, and rubidium telluride(in German). Zeitschrift fuer Anorganische und Allgemeine Chemie, 1977. 429: 118–130. ISSN: 0044-2313
  3. ^ Caesium selenide at AlfaAesar, accessed on Dienstag, 29 June 2010 (PDF) (JavaScript required).[dead link]
  4. ^ "C&L Inventory". echa.europa.eu.