Technetium(VII) oxide | |
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Technetium(VII) oxide |
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Other names
Technetium heptoxide |
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Properties | |
Molecular formula | Tc2O7 |
Appearance | yellow solid |
Melting point |
119.5 °C |
Boiling point |
310.6 °C |
Solubility in water | hydrolysis to HTcO4 |
Hazards | |
Main hazards | radioactive |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
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 O-Tc-O angle is 180°[1]
Technetium(VII) oxide is prepared by the oxidation of technetium at 450–500 °C:[2]
It is the anhydride of pertechnic acid and the precursor to sodium pertechnetate:
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