Molecular single iron site catalysts for electrochemical nitrogen fixation under ambient conditions

[Display omitted] •The molecular catalyst, FeTPPCl, can efficiently transform N2 to NH3 in pH-universal media.•The isotopic experiments confirm that the synthesized NH3 is derived from the direct supply of N2.•Operando Raman spectroscopy studies confirm that the breakage of the Fe–Cl bond is a prere...

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