Carbon dioxide reduction by an Al-O-P frustrated Lewis pair.

ABSTRACT: The reaction of tBu₂P(O)H with Bis₂AlH (Bis = CH(SiMe₃)₂) afforded the adduct tBu₂P(H)-O-Al(H)Bis₂ (3). It slowly releases H₂ to form the first oxygen-bridged geminal Al/P frustrated Lewis pair tBu₂P-O-AlBis₂. It is capable of reversibly binding molecular hydrogen to afford 3, shown by NMR and H/D scrambling experiments, and forms a 1,2-adduct with CO₂. Importantly, the H₂ adduct 3 reduces CO₂ in a stoichiometric reaction leading to the formic acid adduct tBu₂P(H)-O-Al(CO₂H)Bis₂. The formation of the different species was explored by density functional theory calculations which provide support for th

SUBMITTER: Wickemeyer L 

PROVIDER: S-EPMC9278507 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature