Iridium tetrachloride is an inorganic compound with the approximate formula IrCl4(H2O)n. It is a water-soluble, hygroscopic amorphous dark brown solid. A well-defined derivative is ammonium hexachloroiridate ((NH4)2IrCl6). It is used to prepare catalysts, such as the Henbest Catalyst for transfer hydrogenation of cyclohexanones.
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