Technetium(VII) oxide - Reference.org

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Technetium(VII) oxide

Chemical compound

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 bi-tetrahedral structure in which the terminal and bridging Tc−O bonds are 167pm and 184 pm respectively and the Tc−O−Tc angle is 180°.

Technetium(VII) oxide is prepared by the oxidation of technetium at 450–500 °C:

4 Tc + 7 O2 → 2 Tc2O7

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

Tc2O7 + 2 H2O → 2 HTcO4 Tc2O7 + 2 NaOH → 2 NaTcO4 + H2O

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References

Krebs, Bernt (1969). "Technetium(VII)-oxid: Ein Übergangsmetalloxid mit Molekülstruktur im festen Zustand". Angewandte Chemie. 81 (9): 328–329. Bibcode:1969AngCh..81..328K. doi:10.1002/ange.19690810905. /wiki/Bibcode_(identifier) ↩
Herrell, A. Y.; Busey, R. H.; Gayer, K. H. (1977). Technetium(VII) Oxide, in Inorganic Syntheses. Vol. XVII. pp. 155–158. doi:10.1002/9780470132487.ch41. ISBN 0-07-044327-0. 0-07-044327-0 ↩