Tricarbonylchloroiridium-Diethyl(methyl)silane-Carbon Monoxide

[Ir(CO)3Cl]n-HSiEt2Me-CO
([Ir(CO)3Cl]n)

[32594-40-4]  · C3ClIrO3  · Tricarbonylchloroiridium-Diethyl(methyl)silane-Carbon Monoxide  · (MW 311.70) (HSiEt2Me)

[760-32-7]  · C5H14Si  · Tricarbonylchloroiridium-Diethyl(methyl)silane-Carbon Monoxide  · (MW 102.28) (CO)

[630-08-0]  · CO  · Tricarbonylchloroiridium-Diethyl(methyl)silane-Carbon Monoxide  · (MW 28.01)

(carbonylation of alkenes1)

Physical Data: [Ir(CO)3Cl]n: mp 235 °C (dec).

Solubility: [Ir(CO)3Cl]n: insol common organic solvents.

Form Supplied in: brown solid ([Ir(CO)3Cl]n); clear liquid (HSiEt2Me); gas (CO).

Purification: [Ir(CO)3Cl]n: sublimes readily at 150 °C in a stream of CO.

Handling, Storage, and Precautions: [Ir(CO)3Cl]n: air stable. Use in a fume hood.

Reactions with Alkenes.

The reaction of alkenes with HSiEt2Me and Carbon Monoxide (50 atm) in the presence of [Ir(CO)3Cl]n at 140 °C gives 1-silyl-1-silyloxyalkenes (eq 1).1 The reaction is applicable to a wide variety of terminal alkenes bearing a functional group such as silyl, alkoxy, acetal, cyano, and epoxy. The products obtained can be easily hydrolyzed to acylsilanes. Triethylsilane and Dimethyl(phenyl)silane can be also used in place of HSiEt2Me. Ir4(CO)12 also exhibited catalytic activity.

Related Reagents.

Carbon Monoxide; Dodecacarbonyltetrarhodium-Dimethyl(phenyl)silane-Carbon Monoxide; Octacarbonyldicobalt-Diethyl(methyl)silane-Carbon Monoxide.


1. Chatani, N.; Ikeda, S.; Ohe, K.; Murai, S. JACS 1992, 114, 9710.

Naoto Chatani & Shinji Murai

Osaka University, Japan



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