Chemistry:Caesium sulfide

From HandWiki
Caesium sulfide
cesium sulfide
Names
IUPAC name
Cesium sulfide
Identifiers
3D model (JSmol)
ChemSpider
Properties
Cs2S
Molar mass 297.876
Appearance white crystal
Density 4.19 g·cm−3[1]
Melting point 480 °C[2]
hydrolyses to form caesium bisulfide[3]
Solubility in ethanol and glycerol soluble
Structure
cubic, anti-fluorite
Hazards
Main hazards toxic
GHS pictograms GHS05: CorrosiveGHS09: Environmental hazard
GHS Signal word Danger
H314, H400
P260, P264, P273, P280, P301+330+331, P303+361+353, P304+340, P305+351+338, P310, P321, P363, P391, P405, P501
Related compounds
Other anions
Caesium oxide
Caesium selenide
Caesium telluride
Caesium polonide
Other cations
Lithium sulfide
Sodium sulfide
Potassium sulfide
Rubidium sulfide
Francium sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cesium sulfide is an inorganic salt with a chemical formula Cs2S. It is a strong alkali in aqueous solution. In the air, cesium sulfide emits rotten egg smelling hydrogen sulfide.

Production

Similar to sodium sulfide, anhydrous cesium sulfide can be produced by reacting cesium and sulfur in THF. It needs ammonia or naphthalene to react.[4]

2Cs + S → Cs2S

By dissolving hydrogen sulfide into cesium hydroxide solution, it will produce cesium bisulfide, then it will produce cesium sulfide too.[5][6]

CsOH + H2S → CsHS + H2O
CsHS + CsOH → Cs2S + H2O

References

  1. 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 für Anorganische und Allgemeine Chemie, 1977. 429: 118-30. ISSN 0044-2313
  2. Dale L. Perry, Sidney L. Phillips: Handbook of inorganic compounds. CRC Press, 1995, ISBN:978-0-8493-8671-8, S. 336 ([1], p. 336, at Google Books).
  3. 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 ([2], p. 692, at Google Books).
  4. J.-H. So and P. Boudjouk (1992). N. G. Russell. ed. "Hexamethyldisilathiane". Inorganic Syntheses: 30–32. doi:10.1002/9780470132609.ch11. ISBN 9780470132609. 
  5. Wilhelm Blitz, Ernst Wilke-Dörfurt: "Über Sulfide des Rubidiums und Cäsiums" in Zeitschr. f. anorg. Chem. 1906. 48, S. 297–317. Volltext
  6. R. Abegg, F. Auerbach: 'Handbuch der anorganischen Chemie'. Verlag S. Hirzel, Bd. 2, 1908. S. 430.Volltext