Caesium compounds: dicaesium selenide

caesium symbol icon

The caesium in dicaesium selenide formally is in the oxidation state 1.

Dicaesium selenide

  • Formula as often written: Cs2Se
  • Hill system formula: Cs2Se1
  • CAS registry number: [31052-46-7]
  • Formula weight: 344.771
  • Class: selenide


  • dicaesium selenide
  • caesium(I) selenide
  • caesium selenide
  • cesium selenide
  • cesium(I) selenide
  • dicesium selenide

Physical properties

  • Colour:
  • Appearance:
  • Melting point:
  • Boiling point:
  • Density:


Coming soon...

Element analysis

Element percentages for the elements in dicaesium selenide
Element %
Cs 77.10
Se 22.90


Not available

Isotope pattern

What follows is the calculated isotope pattern for the Cs2Se unit with the most intense ion set to 100%.

Formula: Cs2Se1

mass  %
340   1.8 _
341 0.0
342 18.1 _________
343 1.5 _
344 47.5 ________________________
345 0.0
346 100.0 __________________________________________________
347 0.0
348 18.5 _________


The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

  • R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
  • N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
  • F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
  • A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
  • R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
  • A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
  • A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
  • J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
  • D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
  • J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
  • J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

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caesium atomic number