Carbon dioxide reduction by an Al-O-P frustrated Lewis pair
The reaction of tBu(2)P(O)H with Bis(2)AlH (Bis = CH(SiMe3)(2)) afforded the adduct tBu(2)P(H)-O-Al(H)Bis(2) (3). It slowly releases H-2 to form the first oxygen-bridged geminal Al/P frustrated Lewis pair tBu(2)P-O-AlBis(2). It is capable of reversibly binding molecular hydrogen to afford 3, shown b...
Saved in:
Published in | Chemical science (Cambridge) Vol. 13; no. 27; pp. 8088 - 8094 |
---|---|
Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
CAMBRIDGE
Royal Soc Chemistry
13.07.2022
Royal Society of Chemistry The Royal Society of Chemistry |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The reaction of tBu(2)P(O)H with Bis(2)AlH (Bis = CH(SiMe3)(2)) afforded the adduct tBu(2)P(H)-O-Al(H)Bis(2) (3). It slowly releases H-2 to form the first oxygen-bridged geminal Al/P frustrated Lewis pair tBu(2)P-O-AlBis(2). 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 H-2 adduct 3 reduces CO2 in a stoichiometric reaction leading to the formic acid adduct tBu(2)P(H)-O-Al(CO2H)Bis(2). The formation of the different species was explored by density functional theory calculations which provide support for the experimental results. All products were characterized by NMR spectroscopy as well as X-ray diffraction experiments and elemental analyses. |
---|---|
Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2041-6520 2041-6539 |
DOI: | 10.1039/d2sc01870e |