Neptunium compounds: dineptunium trisulphide

neptunium symbol icon

The neptunium in dineptunium trisulphide formally is in the oxidation state 3.

Crystal structure of dineptunium trisulphide

Dineptunium trisulphide

  • Formula as often written: Np2S3
  • Hill system formula: Np2S3
  • CAS registry number: [12281-24-2]
  • Formula weight: 570.294
  • Class: sulphide

Synonyms

  • dineptunium trisulphide
  • neptunium(III) sulphide
  • dineptunium trisulfide
  • neptunium sulfide
  • neptunium sulphide
  • neptunium(III) sulfide

Physical properties

  • Colour:
  • Appearance:
  • Melting point: 1200°C (changes to beta form)
  • Boiling point:
  • Density:

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Element analysis

Element percentages for the elements in dineptunium trisulphide
Element %
Np 83.13
S 16.87

Synthesis

Not available

Solid state structure

  • Geometry of neptunium:
  • Prototypical structure:

Crystal structure of dineptunium trisulphide

Isotope pattern

What follows is the calculated isotope pattern for the Np2S3 unit with the most intense ion set to 100%.

Formula: Np2S3

mass  %
570 100.0 __________________________________________________
571 2.4 _
572 13.3 _______
573 0.2
574 0.7
575 0.0
576 0.0

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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neptunium atomic number