Sodium hexachloroiridate(III)

Sodium hexachloroiridate(III)
Identifiers

CAS Number	15702-05-3 anhydrate^Y 123334-23-6 hydrate^Y
3D model (JSmol)	Interactive image
ChemSpider	10752214
ECHA InfoCard	100.036.162
EC Number	239-795-6
PubChem CID	22016331
InChI InChI=1S/6ClH.Ir.3Na/h61H;;;;/q;;;;;;+3;3+1/p-6 Key: GSONQQIOULBMRS-UHFFFAOYSA-H
SMILES [Na+].[Na+].[Na+].Cl[Ir-3](Cl)(Cl)(Cl)(Cl)Cl
Properties
Chemical formula	Cl₆IrNa₃
Molar mass	473.89 g·mol⁻¹
Solubility in water	31.46 g/100 g (15°C)^[1]
Solubility	insoluble in ethanol, very slightly soluble in acetone^[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Sodium hexachloroiridate(III) is an inorganic compound with the chemical formula Na₃IrCl₆.

Preparation

Sodium hexachloroiridate(III) can be produced by the reduction of sodium hexachloroiridate(IV) with Fe²⁺, oxalate or hydrogen sulfide.^[2]

It can also be produced by heating iridium metal with NaCl and Cl₂.^[3]

Sodium hexachloroiridate(III) will get dehydrated at 110°C, and reversible decomposes at 550°C.^[1]

2 Na₃IrCl₆ ⇌ 2 Ir + 6 NaCl + 3 Cl₂

In air, sodium hexachloroiridate(III) will be oxidized at 450°C.^[1]

2 Na₃IrCl₆ + 2 O₂ → 2 IrO₂ + 6 NaCl + 3 Cl₂

It reacts with hydrochloric acid to form hydrogen hexachloroiridate(III).^[4]

It also reacts with ammonia water in sealed tube at 145°C to form [Ir(NH₃)₆]Cl₃.^[3]

^ ^a ^b ^c ^d Pannetier, G.; Macarovici, D.; Gaultier, M. (1972). "Les complexes halogenes d'iridium". Journal of Thermal Analysis (in French). Springer Science and Business Media LLC. 4 (2): 177–186. doi:10.1007/bf01911927. ISSN 0368-4466. S2CID 102384528.
^ Fergusson, JE; Rankin, DA (1983). "The chloro and bromo complexes of iridium(III) and iridium(IV). I. Preparation". Australian Journal of Chemistry. CSIRO Publishing. 36 (5): 863. doi:10.1071/ch9830863. ISSN 0004-9425.
^ ^a ^b Housecroft, Catherine E. (2006-03-15), "Iridium: Inorganic & Coordination Chemistry", Encyclopedia of Inorganic Chemistry, Chichester, UK: John Wiley & Sons, Ltd, doi:10.1002/0470862106.ia101, ISBN 0470860782
^ Venediktov, A. B.; Kultyshev, R. G. Polynuclear iridium(III) chlorides. Zhurnal Neorganicheskoi Khimii, 1989. 34 (4). 909-915. ISSN 0044-457X