Technetium(VII) oxide is the
chemical compound with the
formula
In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship betwee ...
Tc
2O
7. 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 O
2 → 2 Tc
2O
7
It is the anhydride of
pertechnetic acid and the precursor to
sodium pertechnetate:
:Tc
2O
7 + 2 H
2O → 2 HTcO
4
:Tc
2O
7 + 2 NaOH → 2 NaTcO
4 + H
2O
References
{{Oxides
Technetium compounds
Transition metal oxides
Acidic oxides