WebElements Periodic Table of the Elements | Samarium

Samarium compounds: disamarium triselenide

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

Disamarium triselenide

Formula as often written: Sm₂Se₃
Hill system formula: Se₃Sm₂
CAS registry number: [12039-56-4]
Formula weight: 537.6
Class: selenide

Synonyms

disamarium triselenide
samarium(III) selenide
samarium selenide

Physical properties

Colour:
Appearance: solid
Melting point:
Boiling point:
Density:

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Element analysis

Element percentages for the elements in disamarium triselenide
Element	%
Se	44.06
Sm	55.94

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Sm₂Se₃ unit with the most intense ion set to 100%.

Formula: Sm₂Se₃

mass  %
518   0.0 
519   0.0 
520   0.1 
521   0.2 
522   0.3 
523   0.7 
524   1.2 _
525   2.4 _
526   3.8 __
527   6.3 ___
528  10.1 _____
529  14.2 _______
530  21.9 ___________
531  28.0 ______________
532  39.4 ____________________
533  48.2 ________________________
534  58.2 _____________________________
535  72.8 ____________________________________
536  73.8 _____________________________________
537  92.5 ______________________________________________
538  84.9 __________________________________________
539  94.6 _______________________________________________
540  95.6 ________________________________________________
541  72.0 ____________________________________
542 100.0 __________________________________________________
543  35.9 __________________
544  88.8 ____________________________________________
545  10.2 _____
546  61.6 _______________________________
547   1.5 _
548  28.9 ______________
549   0.1 
550   7.8 ____
551   0.0 
552   1.1 _
553   0.0 
554   0.1

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.