An Iron-Sulfur Cluster with a Highly Pyramidalized Three-Coordinate Iron Center and a Negligible Affinity for Dinitrogen.

ABSTRACT: Attempts to generate open coordination sites for N₂ binding at synthetic Fe-S clusters often instead result in cluster oligomerization. Recently, it was shown for Mo-Fe-S clusters that such oligomerization reactions can be prevented through the use of sterically protective supporting ligands, thereby enabling N₂ complex formation. Here, this strategy is extended to Fe-only Fe-S clusters. One-electron reduction of (IMes)₃Fe₄S₄Cl (IMes = 1,3-dimesitylimidazol-2-ylidene) forms the transiently stable edge-bridged double cubane (IMes)₆Fe₈S₈, which loses two IMes ligands to form the face-bridged double-cubane, (IMes)₄Fe₈S₈. The finding that the three supporting IMes ligands do

SUBMITTER: Brown AC 

PROVIDER: S-EPMC10824254 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature