Molybdenum compounds: molybdenum diselenide

molybdenum symbol icon

The molybdenum in molybdenum diselenide formally is in the oxidation state 4.

Crystal structure of molybdenum diselenide

Molybdenum diselenide

  • Formula as often written: MoSe2
  • Hill system formula: Mo1Se2
  • CAS registry number: [12058-18-3]
  • Formula weight: 253.86
  • Class: selenide

Synonyms

  • molybdenum diselenide
  • molybdenum(IV) selenide
  • molybdenum selenide

Physical properties

  • Colour: grey
  • Appearance: crystalline solid
  • Melting point: >1200°C
  • Boiling point:
  • Density: 6900 kg m-3

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Element analysis

Element percentages for the elements in molybdenum diselenide
Element %
Mo 37.79
Se 62.21

Synthesis

Not available

Solid state structure

  • Geometry of molybdenum:
  • Prototypical structure:

Crystal structure of molybdenum diselenide

Isotope pattern

What follows is the calculated isotope pattern for the MoSe2 unit with the most intense ion set to 100%.

Formula: Mo1Se2

mass  %
240   0.0 
241 0.0
242 0.2
243 0.0
244 1.5 _
245 0.4
246 6.8 ___
247 2.1 _
248 22.0 ___________
249 8.3 ____
250 47.6 ________________________
251 22.7 ___________
252 79.7 ________________________________________
253 42.4 _____________________
254 93.0 ______________________________________________
255 54.6 ___________________________
256 100.0 __________________________________________________
257 32.6 ________________
258 82.9 _________________________________________
259 7.7 ____
260 38.7 ___________________
261 0.6
262 8.2 ____
263 0.0
264 0.6

References

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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molybdenum atomic number