We report the synthesis and spectroscopic characterization of a series of iron‐carbene complexes in redox states {Fe=C(H)Ar}10–11. Pulse EPR studies of the1,2H and13C isotopologues of {Fe=C(H)Ar}11reveal the high covalency of the Fe–carbene bonding, leading to a more even spin distribution than commonly observed for reduced Fischer carbenes.
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Abstract -
57Fe nuclear resonance vibrational spectroscopy (NRVS) is used to study the tetranuclear iron clusters bearing a terminal Fe(more » « less
iii )–O/OH moiety. The redox states of the three remote basal iron sites modulate the Fe(iii )–O/OH vibrational frequencies.Free, publicly-accessible full text available October 9, 2025