Rhenium tetraiodide

Rhenium tetraiodide is a binary chemical compound of rhenium and iodide with the chemical formula.

Synthesis
Rhenium tetraiodide can be obtained via the reduction of perrhenic acid with hydrogen iodide:


 * 2HReO4 + 14HI4 -> 2ReI4 + 3I2 + 8H2O

Physical properties
Rhenium tetraiodide forms black solid substance which is soluble in acetone and ether. Hydrolyzed by water, hygroscopic.

Chemical properties
Rhenium tetraiodide is hydrolyzed by water:
 * ReI4 + 2H2O -> ReO2 + 4HI

Rhenium tetraiodide decomposes when heated:
 * ReI4 -> ReI3, ReI2, ReI, I2