Shedding light on the mechanism of CO2 insertion into Ir(I)-hydroxide and Ir(I)- alkoxide bonds: a kinetic and computational study
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چکیده
We recently reported the facile insertion of CO2 into Ir(I)alkoxide and Ir(I)-amide bonds. In particular, [Ir(cod)(I i Pr)(OH)] (I i Pr = 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)(I i Pr)}2(μκ 1 O:κ 2 O,O-CO3)] complex. In the present study we probe this reaction using kinetic and theoretical studies, which enabled us to analyze its facile nature and to fully elucidate the reaction mechanism with excellent correlation between the two methods.
منابع مشابه
CO2 fixation employing an iridium(I)-hydroxide complex.
The reactivity of a number of Ir(I) complexes towards CO2 is explored using [Ir(NHC)(OH)] as a key synthon. CO2 insertion into Ir-O and Ir-N bonds proved facile, yielding a number of Ir(I)-carbonates and -carbamates. Most importantly, reaction between CO2 and Ir(I)-OH led to isolation of the novel [{Ir(I)}2-(μ-κ(1):κ(2)-CO3)] complex.
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تاریخ انتشار 2015