Ditechnetium heptoxide

  • Formula: Tc2O7
  • Hill system formula: O7Tc2
  • CAS registry number: [12165-21-8]
  • Formula weight: 307.81
  • Class: oxide
  • Colour: pale yellow
  • Appearance:
  • Melting point: 119.5°C
  • Boiling point: 310.6
  • Density:

The following are some synonyms of ditechnetium heptoxide:

  • ditechnetium heptoxide
  • technetium(VII) oxide
  • technetium heptoxide
  • technetium oxide

The oxidation number of technetium in ditechnetium heptoxide is 7.


Not available

Solid state structure

  • Geometry of technetium:
  • Prototypical structure:
Crystal structure of ditechnetium heptoxide.
Crystal structure of ditechnetium heptoxide.

Element analysis

The table shows element percentages for Tc2O7 (ditechnetium heptoxide).

Element %
O 36.38
Tc 63.62

Isotope pattern for Tc2O7

The chart below shows the calculated isotope pattern for the formula Tc2O7 with the most intense ion set to 100%.


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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