The mechanism of CO2 insertion into iridium(I) hydroxide and alkoxide bonds: a kinetics and computational study
Byron J Truscott1, Hedi Kruger, Paul B Webb
1EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, KY16 9ST (UK) http://chemistry.st-and.ac.uk/staff/spn/group/SP_Nolan/Home.html.
Abstract:
The facile insertion of CO2 into iridium(I) hydroxide, alkoxide, and amide bonds was recently reported. In particular, [Ir(cod)(IiPr)(OH)] (IiPr = 1,3-bis(isopropyl)imidazol-2-ylidene) reacted with CO2 in solution and in the solid state in a matter of minutes to give the novel [{Ir(cod)(IiPr)}2(μ-κ(1)O:κ(2)O,O-CO3)] complex. In the present study, this reaction is probed using kinetics and theoretical studies, which enabled us to analyse its facile nature and to fully elucidate the reaction mechanism with excellent correlation between the two methods.
Related Concept Videos
Heterogeneous Catalysis
Hydroboration-Oxidation of Alkenes
Regioselectivity and Stereochemistry of Hydroboration
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
E2 Reaction: Kinetics and Mechanism
Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids


