Sodium hexachloroiridate(III)

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

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
CompTox Dashboard (EPA)	DTXSID001036058
InChI InChI=1S/6ClH.Ir.3Na/h6*1H;;;;/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

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]

Reactions

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]