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°.
Structural formula of technetium(VII) oxide.
Unit cell of technetium(VII) oxide.
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||307.810 g/mol|
|Appearance||light yellow solid|
|Melting point||119.5 °C (247.1 °F; 392.6 K)|
|Boiling point||310.6 °C (591.1 °F; 583.8 K)|
|hydrolysis to HTcO4|
|Pbca, No. 61|
a = 1375.6 pm, b = 743.9 pm, c = 561.7 pm
|Occupational safety and health (OHS/OSH):|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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