- Electrocatalytic reduction of CO2 with palladium bis-N-heterocyclic carbene pincer complexes.
Electrocatalytic reduction of CO2 with palladium bis-N-heterocyclic carbene pincer complexes.
Inorganic chemistry (2014-10-23)
Jeffrey A Therrien, Michael O Wolf, Brian O Patrick
PMID25337973
ABSTRACT
A series of pyridine- and lutidine-linked bis-N-heterocyclic carbene (NHC) palladium pincer complexes were electrochemically characterized and screened for CO2 reduction capability with 2,2,2-trifluoroethanol, acetic acid, or 2,2,2-trifluoroacetic acid (TFA) as proton sources. The lutidine-linked pincer complexes electrocatalytically reduce CO2 to CO at potentials as low as -1.6 V versus Ag/AgNO3 in the presence of TFA. The one-electron reduction of these complexes is shown to be chemically reversible, yielding a monometallic species, with density functional theory studies indicating charge storage on the redox-active ligand, thus addressing a major source of deactivation in earlier triphosphine electrocatalysts.
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Residual Solvent - Acetonitrile, Pharmaceutical Secondary Standard; Certified Reference Material
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Residual Solvent Class 2 - Acetonitrile, United States Pharmacopeia (USP) Reference Standard
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Magnesium perchlorate, puriss., free-flowing powder, ≥99.0% (calc. based on dry substance, KT)
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