Iridium tetrachloride

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).^[2] It is used to prepare catalysts, such as the Henbest Catalyst for transfer hydrogenation of cyclohexanones.^[3]

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Iridium tetrachloride

Identifiers
CAS Number	10025-97-5
3D model (JSmol)	Interactive image
ChemSpider	11252181
ECHA InfoCard	100.030.032
EC Number	233-048-8
PubChem CID	24815
UNII	PCG7KVC21I
CompTox Dashboard (EPA)	DTXSID10893602
InChI InChI=1S/4ClH.Ir/h4*1H;/q;;;;+4/p-4 Key: CALMYRPSSNRCFD-UHFFFAOYSA-J
SMILES Cl[Ir](Cl)(Cl)Cl
Properties
Chemical formula	Cl4Ir
Molar mass	334.02 g·mol−1
Appearance	amorphous brown solid
Melting point	763 °C (1,405 °F; 1,036 K) (decomposes)[1]
Solubility in water	soluble
Solubility	soluble in alcohol, dilute hydrochloric acid
Hazards
GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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