Hosta

by | Mar 16, 2018 | Hosta

How Can We Help?
You are here:
< Back

Protactinium tetraiodide is a binary inorganic compound of protactinium metal and iodine with the chemical formula PaI4.[1][2]

Synthesis

Protactinium tetraiodide can be prepared by reducing the pentaiodide with aluminum at about 400 °C:[3]

3PaI5 + Al → 3PaI4 + AlI3

Also, a reaction of hydrogen reduction of protactinium(V) iodide at 400 °C:[4]

2PaI5 + H2 → 2PaI4 + 2HI

Physical properties

The compound forms black or dark green crystals.[4] The structure is not known.[5]

Chemical properties

The compound is oxidized by antimony trioxide when heated in a vacuum:[6]

3PaI4 + Sb2O3 → 3PaOI2 + 2SbI3

The compound also reacts with quartz when heated:[dubious – discuss]

2PaI4 + SiO2 → 2PaOI2 + SiI4

References

  1. ^ "WebElements Periodic Table » Protactinium » protactinium tetraiodide". webelements.com.
  2. ^ Brown, David; Canterford, J. H.; Colton, Ray (1968). Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown. Wiley. p. 214. ISBN 978-0-470-10840-6. Retrieved 2 April 2024.
  3. ^ Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 28 February 1970. p. 19. ISBN 978-0-08-057861-3. Retrieved 2 April 2024.
  4. ^ a b Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3509. ISBN 978-0-412-30120-9. Retrieved 2 April 2024.
  5. ^ Emeléus, Harry Julius; Sharpe, A. G. (1959). Advances in Inorganic Chemistry and Radiochemistry. Academic Press. p. 19. Retrieved 2 April 2024.
  6. ^ Morss, Lester R.; Edelstein, Norman M.; Fuger, J. (2010). The Chemistry of the Actinide and Transactinide Elements (PDF). Dordrecht: Springer. p. 874. ISBN 978-94-007-0210-3. Archived from the original (PDF) on 26 August 2017. Retrieved 3 April 2024.
Categories
Table of Contents