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12749 Chloro(1,5-cyclooctadiene)iridium(I) dimer, Ir 57.2%

CAS Number
Bis(1,5-cyclooctadiene)diiridium(I) dichloride

Stock No. Size Price ($) Quantity Availability
12749-01 0.25g 59.80
12749-03 1g 169.00
12749-06 5g 853.00
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Chloro(1,5-cyclooctadiene)iridium(I) dimer, Ir 57.2%


Chemical Properties

Formula Weight
Crystalline powder
Melting point
190° dec.
Storage & Sensitivity
Ambient temperatures.
Soluble in chloroform and toluene. Slightly soluble in acetone and alcohol. Insoluble in water.


Chloro(1,5-cyclooctadiene)iridium(I) dimer is widely used as a precursor to other iridium complexes, which finds application in homogeneous catalysis like carbonylation, hydrosilylation, hydrofomylation, asymmetric allylic substitutions, metathesis and chiral catalysis reactions. It is involved in the preparation of Crabtree's catalyst, which is used for hydrogenation and hydrogen-transfer reactions.


Moisture sensitive. Incompatible with strong oxidizing agents.

Literature References

John, J.; Wilson-Konderka, C.; Metallinos, C. Low Pressure Asymmetric Hydrogenation of Quinolines using an Annulated Planar Chiral N-Ferrocenyl NHC-Iridium Complex. Adv. Synth. Catal. 2015, 357 (9), 2071-2081.

El Amouri, H.; Gruselle, M.; Jaouén, G. bis[Dichloro(η-pentamethylcyclopentadienyl)rhodium(III) and-iridium(III)] from bis[Chloro(1, 5-cyclooctadiene)rhodium(I) and-iridium(I)] Oxidation, and Formation of 1, 5-Cyclooctadiene(η-pentamethylcyclopentadienyl)rhodium(I). Synth. React. Inorg. Met.-Org. Chem. 2015, 24 (3), 395-400.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P362-P501c

Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Harmonized Tariff Code


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