Technetium(VII) oxide

From Infogalactic: the planetary knowledge core
Jump to: navigation, search
Technetium(VII) oxide
200px
Names
IUPAC name
Technetium(VII) oxide
Other names
Technetium heptoxide
Identifiers
12165-21-8 N
Jmol 3D model Interactive image
PubChem 22227441
  • InChI=1S/7O.2Tc/q7*-2;2*+7
  • [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Tc+7].[Tc+7]
Properties
Tc2O7
Molar mass 307.810 g/mol
Appearance light yellow solid
Density 3.5 g/cm3
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
Structure
orthrhombic
Vapor pressure {{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
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 Tc-O-Tc angle is 180°.[1]

Technetium(VII) oxide is prepared by the oxidation of technetium at 450–500 °C:[2]

2 Tc + 3.5 O2 → Tc2O7

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

Tc2O7 + 2 NaOH → 2 NaTcO4 + H2O

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Lua error in package.lua at line 80: module 'strict' not found.
Retrieved from "https://infogalactic.com/w/index.php?title=Technetium(VII)_oxide&oldid=642218425"