Iridium(IV) iodide

Iridium(IV) iodide is a binary chemical compound of iridium and iodide with the chemical formula.

Preparation
Iridium(IV) iodide can be obtained by reacting dipotassium hexachloroiridate or hexachloroiridic acid with an aqueous solution of potassium iodide.

Properties
Iridium tetraiodide forms black crystals, does not dissolve in water and alcohol. In alkali metal iodide solutions, the compound dissolves easily to give a ruby red solution, forming complex salts.

The compound decomposes when heated:
 * IrI4 -> Ir + 2I2

Uses
Iridium(IV) iodide can be used as a catalyst in organic chemistry.