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Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
Published on: December 4, 2017
Iron porphyrins with a hydrogen bonding cavity: effect of weak interactions on their electronic structure and
Kaustuv Mittra1, Asmita Singha, Abhishek Dey
1Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata, India 700032. icad@iacs.res.in.
Abstract:
The electronic structure and reactivity of iron porphyrin complexes bearing 2nd sphere hydrogen bonding residues have been investigated over the last few years. The presence of these weak interactions alters the spin ground state, and axial ligand bonding and provides a proton translocation pathway into the active site. Mechanistic investigations in organic as well as aqueous media demonstrate how controlled delivery of protons is fundamental in dictating the selectivity of a multi-electron multi-proton process like the reduction of dioxygen to water.
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