Iridium(III) chloride, often represented as IrCl3​, is a chemical compound consisting of iridium (Ir) and chlorine (Cl) atoms. It’s an example of an iridium compound where iridium is in the +3 oxidation state.

Iridium(III) chloride can exist in various forms, including both anhydrous and hydrated forms. One common hydrated form is IrCl3​⋅xH2​O, where $x$ represents the number of water molecules associated with each iridium(III) chloride molecule.

This compound is often prepared by the reaction of iridium metal or iridium dioxide with chlorine gas. It’s a dark brown or black solid that is sparingly soluble in water. Iridium(III) chloride is known for its catalytic properties and finds applications in various chemical reactions, including organic synthesis.