Rhenium tetraiodide

Rhenium tetraiodide
Names
	Other names Rhenium(IV) iodide, tetraiodorhenium
Identifiers
CAS Number	59301-47-2;
3D model (JSmol)	Interactive image;
ChemSpider	77349697;
PubChem CID	13159444;
	InChI InChI=1S/4HI.Re/h4*1H;/q;;;;+4/p-4 Key: KGKLLWHEYDUTBF-UHFFFAOYSA-J;
	SMILES I[Re](I)(I)I;
Properties
Chemical formula	I4Re
Molar mass	693.825 g·mol−1
Appearance	black solid
Density	g/cm3
Solubility in water	reacts with water
Related compounds
Related compounds	Iridium tetraiodide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Rhenium tetraiodide is a binary chemical compound of rhenium and iodide with the chemical formula ReI
₄.^[1]^[2]^[3]

Synthesis

Rhenium tetraiodide can be obtained via the reduction of perrhenic acid with hydrogen iodide:^[4]

2HReO₄ + 14HI₄ → 2ReI₄ + 3I₂ + 8H₂O

Rhenium tetraiodide forms black solid substance which is soluble in acetone and ether. Hydrolyzed by water, hygroscopic.^[5]

Rhenium tetraiodide is hydrolyzed by water:^[5]

ReI₄ + 2H₂O → ReO₂ + 4HI

Rhenium tetraiodide decomposes when heated:^[5]^[6]

ReI₄ → ReI₃, ReI₂, ReI, I₂

^ "WebElements Periodic Table » Rhenium » rhenium tetraiodide". webelements.com. Retrieved 7 May 2023.
^ Brown, D.; Colton, R. (June 1963). "Preparation of Rhenium Tetrachloride". Nature. 198 (4887): 1300–1301. Bibcode:1963Natur.198.1300B. doi:10.1038/1981300a0. ISSN 1476-4687. S2CID 4208748. Retrieved 7 May 2023.
^ Colton, R.; Levitus, R.; Wilkinson, G. (1 January 1960). "806. Some complex compounds of rhenium". Journal of the Chemical Society (Resumed): 4121–4126. doi:10.1039/JR9600004121. ISSN 0368-1769. Retrieved 7 May 2023.
^ Kemmitt, R. D. W.; Peacock, R. D. (26 January 2016). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 921. ISBN 978-1-4831-8762-4. Retrieved 7 May 2023.
^ ^a ^b ^c Savit︠s︡kiĭ, Evgeniĭ Mikhaĭlovich; Tulkina, Marii︠a︡ Aronovna; Povarova, Kira Borisovna (1970). Rhenium Alloys. Israel Program for Scientific Translations; [available from the U.S. Department of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.] p. 62. Retrieved 9 May 2023.
^ "CharChem. Rhenium(IV) iodide". easychem.org. Retrieved 9 May 2023.

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