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Technetium(VII) oxide

Technetium(VII) oxide
IUPAC name Technetium(VII) oxide
Other names Technetium heptoxide
Molecular formula Tc2O7
Appearance yellow solid
Melting point

119.5 °C

Boiling point

310.6 °C

Solubility in water hydrolysis to HTcO4
Main hazards radioactive
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Technetium(VII) oxide is the chemical compound with the formula Tc2O7. This yellow volatile solid is a rare example of a molecular binary metal oxide, the other examples being RuO4, OsO4, and the unstable Mn2O7. It adopts a centrosymmetric corner-shared bitetrahedral structure.[1]

Technetium(VII) oxide is prepared by the oxidation of technetium at 450-500 °C:[2]

2 Tc + 3.5 O2 → Tc2O7

It is the anhydride of pertechnic acid and the precursor to sodium pertechnetate:

Tc2O7 + 2 NaOH → 2 NaTcO4 + H2O


  1. ^ Krebs, B. Technetium(VII)-oxid: Ein Übergangsmetalloxid mit Molekülstruktur im festen Zustand" Angewandte Chemie 1969, Volume 81, pp. 328 - 329. DOI 10.1002/ange.19690810905
  2. ^ Herrell, A. Y.; Busey, R. H.; Gayer, K. H. "Technetium(VII) Oxide" Inorganic Syntheses, 1977, volume XVII, p. 155-158. ISBN 0-07-044327-0.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Technetium(VII)_oxide". A list of authors is available in Wikipedia.
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