Catalytic reactivity of an iridium complex with a proton responsive N-donor ligand in CO₂ hydrogenation to formate.

ABSTRACT: Catalytic hydrogenation of CO₂ into formic acid/formate is an attractive conversion in the utilization of CO₂. Although various catalysts with high catalytic efficiency are reported, a very few studies have been carried out to correlate/understand the efficacy and stability of the hydrogenation catalysts, which could be helpful to direct the future design strategy of corresponding catalysts. Herein, a half-sandwich iridium complex containing bibenzimidazole as a proton responsive N-donor ligand, [Cp*Ir(BiBzImH₂)Cl]Cl, has been synthesized and fully characterized. The generation of an N^- anion by the deprotonation of a bibenzimidazole group resulted in a significant enhancement of activity. The Ir complex showed about 20 times higher catalytic eff

SUBMITTER: Gunasekar GH 

PROVIDER: S-EPMC9077040 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature