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Technetium(VII) oxide

Chemical compound From Wikipedia, the free encyclopedia

Technetium(VII) oxide
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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 TcO bonds are 167pm and 184 pm respectively and the TcOTc angle is 180°.[2]

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Technetium (VII) oxide containing Technetium-99

Technetium(VII) oxide is prepared by the oxidation of technetium at 450–500 °C:[3]

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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