Journal
ACS CATALYSIS
Volume 3, Issue 10, Pages 2412-2416Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs400609u
Keywords
hydrogenation; formic acid; homogeneous catalysis; pincer ligands; ruthenium
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Funding
- U.S. National Science Foundation under the CCI Center for Enabling New Technologies Through Catalysis (CENTC) Phase II Renewal [CHE-1205189]
- NSF [CHE-0840456]
- Rackham Merit Fellowship
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1205189] Funding Source: National Science Foundation
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This paper reports the hydrogenation of carbon dioxide to formate catalyzed by the Ru pincer complex Ru(PNN)CO(H) (PNN = 6-(di-tert-butylphosphinomethylene)-2-(N,N-diethylaminomethyl)-1,6-dihydropyridine). Stoichiometric studies are presented that support the feasibility of the individual steps in a proposed catalytic cycle for this transformation. The influence of base and solvent on catalyst performance is explored. Overall, under optimized conditions (using diglyme as the solvent and potassium carbonate as the base) up to 23,000 turnovers of formate and a turnover frequency of up to 2,200 h(-1) can be achieved.
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