Iridium tetrabromide

Iridium tetrabromide
Names
	Other names Iridium(IV) bromide, tetrabromoiridium
Identifiers
CAS Number	7789-64-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	13905634;
ECHA InfoCard	100.029.255
EC Number	232-180-3;
PubChem CID	14029372;
CompTox Dashboard (EPA)	DTXSID70999078;
	InChI InChI=1S/4BrH.Ir/h4*1H;/q;;;;+4/p-4 Key: IYWTUWKWQJIZPO-UHFFFAOYSA-J;
	SMILES Br[Ir](Br)(Br)Br;
Properties
Chemical formula	Br4Ir
Molar mass	511.833 g·mol−1
Appearance	black crystalline solid
Solubility in water	soluble
Related compounds
Related compounds	Osmium tetrabromide
Hazards
	GHS labelling:
Signal word	Warning
Hazard statements	H315, H319, H335
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Iridium tetrabromide is a binary inorganic chemical compound of iridium and bromine with the chemical formula IrBr₄.^[1]^[2]^[3] This is a salt of iridium metal and hydrobromic acid.

Synthesis

Synthesis of iridium tetrabromide can be by solution of iridium(IV) oxide in hydrobromic acid:

IrO₂ + 4HBr → IrBr₄ + 2H₂O

Iridium tetrabromide compound forms black crystals, soluble in water and alcohol.^[4]^[5]

Iridium tetrabromide reacts with water:

IrBr₄ + 4H₂O → Ir(OH)₄ + 4HBr

Iridium tetrabromide decomposes when heated:

IrBr₄ → Ir + 2Br₂

^ Roscoe, Henry Enfield; Schorlemmer, Carl (1895). A Treatise on Chemistry. D. Appleton. p. 445. Retrieved 5 May 2023.
^ "WebElements Periodic Table » Iridium » iridium tetrabromide". webelements.com. Retrieved 5 May 2023.
^ "Iridium(IV) Bromide". American Elements. Retrieved 5 May 2023.
^ Comey, Arthur Messinger (1896). A Dictionary of chemical solubilities. Macmillan and Company. p. 192. Retrieved 5 May 2023.
^ Holloway, Michael D.; Holloway, Emma (15 December 2020). Dictionary of Industrial Terminology. John Wiley & Sons. p. 623. ISBN 978-1-119-36344-6. Retrieved 5 May 2023.

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