Technetium(VII) oxide

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 Ã‚°C:

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

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