Par Liam GRUNWALD
Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
Iron-sulfur cubanes are omnipresent cofactors for electron transfer in Nature and have been studied since the early 1970s. The fundamental understanding of these sites was enabled by the synthesis and characterization of small molecules with an analogous architecture as the natural [Fe4S4(SCys)4]n– site. Still, an accurate model for the most reactive so-called superreduced oxidation state was never prepared and the complete biomimetic redox series of [Fe4S4]3+/2+/1+/0 complexes was never traversed synthetically. In this work, it is demonstrated that the use of a bulky arylthiolate ligand promoting the encapsulation of potassium cations in the vicinity of the Iron-sulfur cubane allows addressing both challenges.
Invité par Geneviève Blondin de l'équipe PMB (Physicochimie des métaux en biologie)