Technetium hexafluoride

Technetium(VI) fluoride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/6FH.Tc/h6*1H;/q;;;;;;+6/p-6
    Key: PRVOBRCYHYXCMU-UHFFFAOYSA-H
  • F[Tc](F)(F)(F)(F)F
Properties
TcF6
Molar mass 212 g/mol (98Tc)
Appearance golden-yellow crystals
Density 3,58 g/cm3 (−140 °C), solid
Melting point 37.4 °C (99.3 °F; 310.5 K)
Boiling point 55.3 °C (131.5 °F; 328.4 K)
Structure
cubic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Technetium hexafluoride or technetium(VI) fluoride (TcF6) is a yellow inorganic compound with a low melting point. It was first identified in 1961. In this compound, technetium has an oxidation state of +6, the highest oxidation state found in the technetium halides. In this respect, technetium differs from rhenium, which forms a heptafluoride, ReF7. Technetium hexafluoride occurs as an impurity in uranium hexafluoride, as technetium is a fission product of uranium (spontaneous fission in natural uranium, possible contamination from induced fission inside the reactor in reprocessed uranium). The fact that the boiling point of the hexafluorides of uranium and technetium are very close to each other presents a problem in using fluoride volatility in nuclear reprocessing.

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