Enhanced and selective oxygen reduction by iron porphyrin with a biguanide residue in the second coordination sphere.

Suman Patra¹, Soumili Ghosh¹, Soumya Samanta¹, Nisha Maurya¹, Somnath Das¹, Abhishek Dey¹

¹School of Chemical Science, Indian Association for the Cultivation of Science 2A Raja SC Mullick Road Kolkata WB 700032 India icad@iacs.res.in.

PubMed PMC DOI PDF

Abstract

The role of 2nd sphere residues in catalytic processes that require multiple protons and multiple electrons is a growing area of interest. These 2nd sphere effects manifest through hydrogen bonding, proton transfer, and electrostatic interactions, resulting in very selective catalysis. Here, a biguanide functional group, which can form very strong hydrogen bonding with several water molecules, is…

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