Rhenium tetraiodide

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

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

Synthesis

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

2HReO₄ + 14HI₄ → 2ReI₄ + 3I₂ + 8H₂O

Physical properties

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

Chemical properties

Rhenium tetraiodide is hydrolyzed by water:^[5]

ReI₄ + 2H₂O → ReO₂ + 4HI

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

ReI₄ → ReI₃, ReI₂, ReI, I₂