Samarium compounds: disamarium trioxide

samarium symbol icon

The samarium in disamarium trioxide formally is in the oxidation state 3.

Disamarium trioxide

  • Formula as often written: Sm2O3
  • Hill system formula: O3Sm2
  • CAS registry number: [12060-58-1]
  • Formula weight: 348.718
  • Class: oxide

Synonyms

  • disamarium trioxide
  • samarium(III) oxide
  • samarium oxide

Physical properties

  • Colour: pale yellow
  • Appearance: crystalline solid
  • Melting point: 2335°C
  • Boiling point:
  • Density: 7600 kg m-3

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Element analysis

Element percentages for the elements in disamarium trioxide
Element %
O 13.76
Sm 86.24

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Sm2O3 unit with the most intense ion set to 100%.

Formula: Sm2O3

mass  %
336   0.7 
337 0.0
338 0.0
339 6.5 ___
340 4.9 __
341 6.0 ___
342 19.1 __________
343 23.9 ____________
344 49.8 _________________________
345 37.7 ___________________
346 35.3 __________________
347 70.8 ___________________________________
348 46.5 _______________________
349 100.0 __________________________________________________
350 64.1 ________________________________
351 44.6 ______________________
352 74.1 _____________________________________
353 0.4
354 85.5 ___________________________________________
355 0.1
356 36.7 __________________
357 0.0
358 0.2

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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samarium atomic number