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Technetium pentafluoride is a binary inorganic chemical compound of technetium metal and fluorine with the chemical formula TcF
₅.

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:

2TcF₆ + I₂  → 2TcF₅ + 2IF

Physical properties

Technetium pentafluoride forms yellow crystals of orthorhombic crystal system. 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.

• Technetium compounds
• Fluorides
• Metal halides