Technetium(V) fluoride

Technetium pentaluoride is a binary inorganic chemical compound of technetium metal and fluorine with the chemical formula TcF
5.[1][2][3][4]

Technetium(V) fluoride
Names
Other names
Technetium(V) fluoride
Identifiers
3D model (JSmol)
  • InChI=1S/5FH.Tc/h5*1H;/q;;;;;+5/p-5
    Key: OSZPGOCLYCKXRN-UHFFFAOYSA-I
  • F[Tc](F)(F)(F)F
Properties
F5Tc
Molar mass 193 g·mol−1
Appearance yellow crystals
Melting point 50 °C (122 °F; 323 K)
reacts with water
Structure
orthorhombic
Related compounds
Related compounds
 Rhenium pentafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Synthesis

The compound can be synthesised by heating of technetium powder in a jet of fluorine diluted with nitrogen:

2Tc + 5F2  → 2TcF5

Another way to prepare it is the effect of iodine on technetium hexafluoride solution in iodine pentafluoride:[5]

2TcF6 + I2  → 2TcF5 + 2IF

Physical properties

Technetium pentafluoride forms yellow crystals[6] of orthorhombic crystal system.[7] It reacts with water, and is volatile.

Chemical properties

The compound is hydrolyzed by water, disproportionating to more stable technetium compounds:

3TcF5 + 8H2O → HTcO4 + 2TcO2 + 15HF

References
  1. "WebElements Periodic Table » Technetium » technetium pentafluoride". webelements.com. Retrieved 19 April 2023.
  2. Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 197. ISBN 978-0-323-14847-4. Retrieved 19 April 2023.
  3. Schwochau, Klaus (21 November 2008). Technetium: Chemistry and Radiopharmaceutical Applications. John Wiley & Sons. p. 113. ISBN 978-3-527-61337-3. Retrieved 19 April 2023.
  4. "Some physical properties of technetium pentafluoride". Journal of Inorganic and Nuclear Chemistry. 28: 231–232. 1 January 1976. doi:10.1016/0022-1902(76)80635-5. ISSN 0022-1902. Retrieved 19 April 2023.
  5. Schwochau, Klaus (21 November 2008). Technetium: Chemistry and Radiopharmaceutical Applications. John Wiley & Sons. p. 114. ISBN 978-3-527-61337-3. Retrieved 19 April 2023.
  6. Lide, David R. (29 June 2004). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. p. 4-88. ISBN 978-0-8493-0485-9. Retrieved 19 April 2023.
  7. Kemmitt, R. D. W.; Peacock, R. D. (26 January 2016). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 889. ISBN 978-1-4831-8762-4. Retrieved 19 April 2023.
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