Substituent-Generated Electric Fields and Ligand Non-Innocence Drive the Record-High Efficiency of Iron Tetraphenylporphyrin Catalysts for CO2-to-CO Conversion.

Electrochemical CO2-to-CO conversion is a critical step in sustainable catalysis, with iron-tetraphenylporphyrin (Fe-TPP) derivatives recognised as benchmark catalysts, reaching turnover frequencies (TOFs) up to 106 s-1 with trimethylammonium (TMA) s…

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