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Synthetic strategy used for the isolation and characterization of the redox series Kn[Fe4S4(DmpS)4] (n = 0–4). (A) Stabilization of reduced FeS cubanes in enzymes versus the strategy deployed in this work. (B) Schematic depiction of syntheses, whereby all reactions were carried out in toluene as solvent. Enzymatic systems and their active redox states relevant for the molecular models are indicated alongside.
