Osmium compounds: heptaosmium uneicosacarbonyl

osmium symbol icon

The osmium in heptaosmium uneicosacarbonyl formally is in the oxidation state 0.

Heptaosmium uneicosacarbonyl

  • Formula as often written: Os7(CO)21
  • Hill system formula: C21O21Os7
  • CAS registry number: [59158-84-8]
  • Formula weight: 1919.822
  • Class: carbonyl complex organometallic

Synonyms

  • heptaosmium uneicosacarbonyl
  • osmium(O) carbonyl
  • aosmium uneicosacarbonyl
  • heptaaosmium 21 carbonyl
  • osmium carbonyl

Physical properties

  • Colour: orange-brown
  • Appearance: crystalline solid
  • Melting point:
  • Boiling point:
  • Density:

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Element analysis

Element percentages for the elements in heptaosmium uneicosacarbonyl
Element %
C 13.14
O 17.50
Os 69.36

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the Os7(CO)21 unit with the most intense ion set to 100%.

Formula: Os7C21O21

mass  %
1903   0.1 
1904 0.1
1905 0.3
1906 0.5
1907 1.2 _
1908 2.3 _
1909 4.1 __
1910 7.1 ____
1911 11.4 ______
1912 17.6 _________
1913 25.6 _____________
1914 35.9 __________________
1915 47.5 ________________________
1916 60.8 ______________________________
1917 73.0 ____________________________________
1918 85.6 ___________________________________________
1919 93.1 _______________________________________________
1920 100.0 __________________________________________________
1921 97.9 _________________________________________________
1922 96.7 ________________________________________________
1923 83.8 __________________________________________
1924 76.8 ______________________________________
1925 57.1 _____________________________
1926 49.3 _________________________
1927 29.8 _______________
1928 25.2 _____________
1929 10.6 _____
1930 10.0 _____
1931 2.4 _
1932 2.2 _
1933 0.5
1934 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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osmium atomic number