1. Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St. SE, Minneapolis, MN 55455 (USA), Fax: (+1)?612‐624‐7029;2. Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213 (USA)
Abstract:
High versus low : The high‐yield generation of a synthetic high‐spin oxoiron(IV) complex, FeIV(O)(TMG3tren)]2+ (see picture, TMG3tren = 1,1,1‐tris{2‐N2‐(1,1,3,3‐tetramethylguanidino)]ethyl}amine), has been achieved by using the very bulky tetradentate TMG3tren ligand, in order to both sterically protect the oxoiron(IV) moiety and enforce a trigonal bipyramidal geometry at the iron center, for which an S=2 ground state is favored.
