Protactinium tetraiodide explained

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

Synthesis

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

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

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]

The compound also reacts with quartz when heated:

Notes and References

1. Web site: WebElements Periodic Table » Protactinium » protactinium tetraiodide . webelements.com.
2. Book: Brown . David . Canterford . J. H. . Colton . Ray . Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown . 1968 . . 978-0-470-10840-6 . 214 . 2 April 2024 . en.
3. Book: Advances in Inorganic Chemistry and Radiochemistry . 28 February 1970 . . 978-0-08-057861-3 . 19 . 2 April 2024 . en.
4. Book: Macintyre . Jane E. . Dictionary of Inorganic Compounds . 23 July 1992 . . 978-0-412-30120-9 . 3509 . 2 April 2024 . en.
5. Book: Emeléus . Harry Julius . Sharpe . A. G. . Advances in Inorganic Chemistry and Radiochemistry . 1959 . . 19 . 2 April 2024 . en.
6. Book: Morss . Lester R. . Edelstein . Norman M. . Fuger . J. . The Chemistry of the Actinide and Transactinide Elements . 2010 . . Dordrecht . 978-94-007-0210-3 . 874 . 3 April 2024 . 26 August 2017 . https://web.archive.org/web/20170826210935/http://radchem.nevada.edu/classes/rdch710/files/Protactinium.pdf . dead .