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In recent years, researchers have shifted their focus towards investigating the redox properties of ancillary ligand backbones for small molecule activation. Several metal complexes have been reported for electrocatalytic H2 evolution reaction (HER), providing valuable mechanistic insights. This process involves efficient coupling of electrons and protons. Redox‐active ligands stipulate internal electron transfer and promote effective orbital overlap between metal and ligand, thereby enabling efficient proton‐coupled electron transfer reactions. Understanding such catalytic mechanisms requires thorough spectroscopic and computational analyses. Herein, we summarize recent examples of molecular electrocatalysts based on 3d transition metals that have significantly influenced mechanistic pathways, thus emphasizing the multifaceted role of metal‐ligand cooperativity.

About the journal
JournalChemistry-A European Journal
Open AccessNo