# Di-u-methoxobis(1,5-cyclooctadiene)diiridium (I)

**CAS:** 12148-71-9  
**PubChem CID:** [11735004](https://pubchem.ncbi.nlm.nih.gov/compound/11735004)  
**Molecular formula:** C₁₈H₃₀Ir₂O₂  
**Molar mass:** 664.9 g/mol  
**IUPAC:** bis((1Z,5Z)-cycloocta-1,5-diene);bis(iridium);methanol  
**SMILES:** `CO.CO.C1/C=C\CC/C=C\C1.C1/C=C\CC/C=C\C1.[Ir].[Ir]`  
**InChIKey:** `MNKCGUKVRJZKEQ-MIXQCLKLSA-N`  
**InChI:** `InChI=1S/2C8H12.2CH4O.2Ir/c2*1-2-4-6-8-7-5-3-1;2*1-2;;/h2*1-2,7-8H,3-6H2;2*2H,1H3;;/b2*2-1-,8-7-;;;;`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 40.5 Ų |
| Hydrogen bond donors | 2 |
| Hydrogen bond acceptors | 2 |
| Rotatable bonds | 0 |
| Heavy atoms | 22 |

## 3D structure

The molecule contains 54 atoms connected by 52 chemical bonds. Interactive 3D model available at: https://molgod.org/molecule/12148-71-9/

## Synonyms

- Di-u-methoxobis(1,5-cyclooctadiene)diiridium (I)
- di-mu-methoxobis(1,5-cyclooctadiene)diiridium (I)
- CS-48313
- 12148-71-9
- (1Z,5Z)-cycloocta-1,5-diene;iridium;methanol

## Data sources

- [PubChem CID 11735004](https://pubchem.ncbi.nlm.nih.gov/compound/11735004)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=12148-71-9)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=12148-71-9)

---

- Canonical: https://molgod.org/molecule/12148-71-9/

**Licence:** Chemical facts in this record come from the public sources credited above; MolGod.org claims no rights in them. The selection, arrangement and texts of this record are © MolGod.org, all rights reserved. Details: https://molgod.org/copyright/#data

**How to cite:** MolGod.org. "Di-u-methoxobis(1,5-cyclooctadiene)diiridium (I) (CAS 12148-71-9)." Last modified 2026-09-03. https://molgod.org/molecule/12148-71-9/ — for a chemical fact, cite its primary source (PubChem CID 11735004); for a 3D model file, cite its MolGod ID, the variant and the SHA-256 from its licence record.

*Last updated: 2026-09-03 · Generator: MOL-GOD v3.12.33*