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[FeFe]-Hydrogenase Mimic Employing ?2-C,N-Pyridine Bridgehead Catalyzes Proton Reduction at Mild Overpotential.

ABSTRACT: Two novel ?2-C,N-pyridine bridged [FeFe]-H2ase mimics (1 and 2) have been prepared and are shown to function as efficient molecular catalysts for electrocatalytic proton reduction. The elemental and structural composition of the complexes are confirmed by NMR and IR spectroscopy, high-resolution mass spectrometry and single-crystal X-ray diffraction. Electrochemical investigations reveal that the complexes reduce protons at their first reduction potential, resulting in the lowest overpotential (120 mV) ever reported for [FeFe]-H2ase mimics in proton reduction catalysis when mild acid (phenol) is used as proton source.

SUBMITTER: Schippers ECF

PROVIDER: S-EPMC6582614 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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[FeFe]-Hydrogenase Mimic Employing κ2-C,N-Pyridine Bridgehead Catalyzes Proton Reduction at Mild Overpotential.

Schippers Esther C F ECF Nurttila Sandra S SS Oudsen Jean-Pierre H JH Tromp Moniek M Dzik Wojciech I WI van der Vlugt Jarl Ivar JI Reek Joost N H JNH

European journal of inorganic chemistry 20190515 20

Two novel κ2-C,N-pyridine bridged [FeFe]-H2ase mimics (1 and 2) have been prepared and are shown to function as efficient molecular catalysts for electrocatalytic proton reduction. The elemental and structural composition of the complexes are confirmed by NMR and IR spectroscopy, high-resolution mass spectrometry and single-crystal X-ray diffraction. Electrochemical investigations reveal that the complexes reduce protons at their first reduction ...[more]

PMID: 31244551

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