Formation of the syn isomer of [Fe(IV)(Oanti)(TMC)(NCMe)](2+) in the reaction of Lewis acids with the side-on bound peroxo ligand in [Fe(III)(η(2)-O2)(TMC)](.).
We demonstrate that the reactions of [Fe(III)(η(2)-O2)(TMC)](+) (TMC = tetramethylcyclam) with Lewis acids (H(+) and NO(+)) afford the recently described syn isomer of [Fe(IV)(O)(TMC)(NCMe)](2+) (and not the anti isomer as had been tacitly assumed). This outcome is a logical consequence of the fact that the side-on peroxo ligand is bound to the syn face of the Fe(TMC) unit in the precursor.
Department of Chemistry and Centre for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, USA. larryque@umn.edu.
Jai
J
Prakash
Department of Chemistry and Centre for Metals in Biocatalysis, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, USA. larryque@umn.edu.
Lawrence
L
Que