Ruthenium(ii) complexes of pyridinol and N-heterocyclic carbene derived pincers as robust catalysts for selective carbon dioxide reduction†
Chance M.
Boudreaux, 
‡a
Nalaka P.
Liyanage,
‡b
Sopheavy
Siek,
a
Deidra L.
Gerlach,
a
Fengrui
Qu,
a
Jared H.
Delcamp
*b
and
Elizabeth T.
Papish
*a
‡a
Nalaka P.
Liyanage,
‡b
Sopheavy
Siek,
a
Deidra L.
Gerlach,
a
Fengrui
Qu,
a
Jared H.
Delcamp
*b
and
Elizabeth T.
Papish
*a
Abstract
A new pincer ligand with N-heterocyclic carbene (NHC) and 4-pyridinol-derived rings supports ruthenium complexes for photocatalytic CO2 reduction. The methoxy group on the pyridine ring offers unique catalysis advantages not seen with the unsubstituted analog. Our best catalyst offers selective CO formation, ∼250 turnover cycles, and a 40 h lifetime.
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