Cyclooctadiene iridium methoxide dimer

Cyclooctadiene iridium methoxide dimer is an organoiridium compound with the formula Ir₂(OCH₃)₂(C₈H₁₂)₂, where C₈H₁₂ is the diene 1,5-cyclooctadiene. It is a yellow solid that is soluble in organic solvents. The complex is used as a precursor to other iridium complexes, some of which are used in homogeneous catalysis.^[1]

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Cyclooctadiene iridium methoxide dimer

Names
Other names bis[(cyclooctadiene]di-μ-methoxydiiridium
Identifiers
CAS Number	12148-71-9
3D model (JSmol)	Interactive image
ChemSpider	21241875
ECHA InfoCard	100.156.683
PubChem CID	53216975 with error
InChI InChI=1S/2C8H12.2CH3O.4CH3.2Ir/c2*1-2-4-6-8-7-5-3-1;2*1-2;;;;;;/h2*1-2,7-8H,3-6H2;2*1H3;4*1H3;;/b2*2-1-,8-7-;;;;;;;; Key: KIQXVKYWEDSHED-SXGOCSEPSA-N
SMILES CO1[Ir](O([Ir]1(C)C)C)(C)C.C1/C=C\CC/C=C\C1.C1/C=C\CC/C=C\C1
Properties
Chemical formula	C18H30Ir2O2
Molar mass	662.870 g·mol−1
Appearance	yellow solid
Density	2.552 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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The compound is prepared by treating cyclooctadiene iridium chloride dimer with sodium methoxide.^[2] In terms of its molecular structure, the iridium centers are square planar as is typical for a d⁸ complex. The Ir₂O₂ core is folded.^[3]

An example of where this catalyst was used is in the synthesis of doravirine.