Iridium acetylacetonate

Iridium acetylacetonate is the iridium coordination complex with the formula Ir(O₂C₅H₇)₃, which is sometimes known as Ir(acac)₃. The molecule has D₃-symmetry.^[2] It is a yellow-orange solid that is soluble in organic solvents.

Iridium acetylacetonate

Identifiers
CAS Number	15635-87-7
3D model (JSmol)	Interactive image
ChemSpider	10745901
ECHA InfoCard	100.036.086
EC Number	239-711-8
PubChem CID	16212107
CompTox Dashboard (EPA)	DTXSID40935428
InChI InChI=1S/3C5H8O2.Ir/c3*1-4(6)3-5(2)7;/h3*3H2,1-2H3; Key: ORBAMVQDIYATLY-UHFFFAOYSA-N
SMILES CC(=O)C=C(C)[O-].CC(=O)C=C(C)[O-].CC(=O)C=C(C)[O-].[Ir+3]
Properties
Chemical formula	C15H21IrO6
Molar mass	489.544 g·mol−1
Appearance	orange solid[1]
Melting point	269 to 271 °C (516 to 520 °F; 542 to 544 K) (decomposes)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation and isomerism

It is prepared from IrCl₃(H₂O)₃ and acetylacetone.^[3] The complex has been resolved into individual enantiomers by separation of its adduct with dibenzoyltartaric acid.^[4]

A second linkage isomers is also known. In the second isomer one of the acetylacetonate ligands is bonded to Ir through carbon.^[5]

Structures of C-bonded "Ir(acac)₃"

Uses

The O₆-bonded isomer has been investigated for use chemical vapor deposition (CVD). One example is the deposition of red phosphorescent emitter compounds used in OLEDs.^[6][7]

The C-bonded isomer has been investigated as a catalyst for C-H activation reactions.^[5]