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Hydrosilylative reduction of carbon dioxide by a homoleptic lanthanum aryloxide catalyst with high activity and selectivity.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 6/14/2021, Vol. 50 Issue 22, p7804-7809. 6p. - Publication Year :
- 2021
-
Abstract
- An efficient tandem hydrosilylation of CO2, which uses a combination of a simple, homoleptic lanthanum aryloxide and B(C6F5)3, was performed. Use of a less sterically hindered silane led to an exclusive reduction of CO2 to CH4, with a turnover frequency of up to 6000 h−1 at room temperature. The catalytic system is robust, and 19 400 turnovers could be achieved with 0.005 mol% loading of lanthanum. The reaction outcome depended highly on the nature of the silane reductant used. Selective production of the formaldehyde equivalent, i.e., bis(silyl)acetal, without over-reduction, was observed when a sterically bulky silane was used. The reaction mechanism was elucidated by stoichiometric reactions and DFT calculations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON dioxide reduction
*LANTHANUM
*CATALYSTS
*SILANE
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 50
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 150767010
- Full Text :
- https://doi.org/10.1039/d1dt01074c