Iridium
Chemical reactions
Content created by REAL intelligence since 2016
Reaction of iridium with acidsIridium metal is resistant to acids, including aqua regia.
Reaction of iridium with airIridium react with O2 when heated.
Ir(s) + O2(g)  IrO2(s) [black]Reaction of iridium with halogensIridium metal reacts with fluorine forming iridium(VI) fluoride, IrF6, and a minor amount of iridium(III) fluoride, IrF3. Carefully heated, iridium(VI) fluoride will form the yellow tetrameric structure [IrF5]4.
3 Ir(s) + 6 F2(g)  IrF6(s) [yellow] + 2 IrF3(s) [black]IrF6(s) [IrF5]4 [yellow]Iridium reacts with Cl2, Br2 and I2, under dry conditions, forming the corresponding iridium(III) halides 2 Ir(s) + 3 Cl2(g) 2 IrCl3(s) [red]2 Ir(s) + 3 Br2(g) 2 IrBr3(s) [red-brown]2 Ir(s) + 4 I2(g) 2 IrI3(s) [dark brown]Reaction of iridium with waterIridium does not react with water under normal conditions.
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