Hafnium compounds: hafnium diselenide

hafnium symbol icon

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

Crystal structure of hafnium diselenide

Hafnium diselenide

  • Formula as often written: HfSe2
  • Hill system formula: Hf1Se2
  • CAS registry number: [12162-21-9]
  • Formula weight: 336.41
  • Class: selenide

Synonyms

  • hafnium diselenide
  • hafnium(IV) selenide
  • hafnium selenide

Physical properties

  • Colour: brown
  • Appearance: crystalline solid
  • Melting point:
  • Boiling point:
  • Density: 7500 kg m-3

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Element analysis

Element percentages for the elements in hafnium diselenide
Element %
Hf 53.06
Se 46.94

Synthesis

Not available

Solid state structure

  • Geometry of hafnium:
  • Prototypical structure:

Crystal structure of hafnium diselenide

Isotope pattern

What follows is the calculated isotope pattern for the HfSe2 unit with the most intense ion set to 100%.

Formula: Hf1Se2

mass  %
324   0.0 
325 0.0
326 0.1
327 0.2
328 0.7
329 1.5 _
330 4.1 __
331 6.9 ___
332 15.8 ________
333 21.0 __________
334 42.7 _____________________
335 40.7 ____________________
336 79.3 ________________________________________
337 53.0 __________________________
338 100.0 __________________________________________________
339 33.1 _________________
340 73.9 _____________________________________
341 8.1 ____
342 20.0 __________
343 0.7
344 1.7 _

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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hafnium atomic number