Osmium compounds: osmium tetrabromide

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The osmium in osmium tetrabromide formally is in the oxidation state 4.

Crystal structure of osmium tetrabromide

Osmium tetrabromide

  • Formula as often written: OsBr4
  • Hill system formula: Br4Os1
  • CAS registry number: [59201-52-4]
  • Formula weight: 509.846
  • Class: bromide

Synonyms

  • osmium tetrabromide
  • osmium(IV) bromide
  • osmium bromide

Physical properties

  • Colour: black
  • Appearance: solid
  • Melting point: 350°C (decomposes to OsBr3 + Br2)
  • Boiling point:
  • Density:

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Element analysis

Element percentages for the elements in osmium tetrabromide
Element %
Br 62.69
Os 37.31

Synthesis

Not available

Solid state structure

  • Geometry of osmium:
  • Prototypical structure:

Crystal structure of osmium tetrabromide

Isotope pattern

What follows is the calculated isotope pattern for the OsBr4 unit with the most intense ion set to 100%.

Formula: Os1Br4

mass  %
500   0.0 
501 0.0
502 0.5
503 0.4
504 5.4 ___
505 6.2 ___
506 24.2 ____________
507 19.9 __________
508 62.6 _______________________________
509 27.0 ______________
510 100.0 __________________________________________________
511 16.9 ________
512 95.0 ________________________________________________
513 4.0 __
514 48.5 ________________________
515 0.0
516 10.2 _____

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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