Iridium acetylacetonate is the iridium coordination complex with the formula Ir(O<sub>2</sub>C<sub>5</sub>H<sub>7</sub>)<sub>3</sub>, which is sometimes known as Ir(acac)<sub>3</sub>. The molecule has D<sub>3</sub>-symmetry. It is a yellow-orange solid that is soluble in organic solvents.
It is prepared from IrCl<sub>3</sub>(H<sub>2</sub>O)<sub>3</sub> and acetylacetone. The complex has been resolved into individual enantiomers by separation of its adduct with dibenzoyltartaric acid.
A second linkage isomers is also known. In the second isomer one of the acetylacetonate ligands is bonded to Ir through carbon.
The O<sub>6</sub>-bonded isomer has been investigated for use chemical vapor deposition (CVD). One example is the deposition of red phosphorescent emitter compounds used in OLEDs.
The C-bonded isomer has been investigated as a catalyst for C-H activation reactions.