We report that redox-inactive Sc(3+) can trigger O2 activation by the Fe(II)(TMC) center (TMC = tetramethylcyclam) to generate the corresponding oxoiron(IV) complex in the presence of BPh4(-) as an electron donor. To model a possible intermediate in the above reaction, we generated an unprecedented Sc(3+) adduct of [Fe(III)(η(2)-O2)(TMC)](+) by an alternative route, which was found to have an Fe(3+)-(μ-η(2):η(2)-peroxo)-Sc(3+) core and to convert to the oxoiron(IV) complex. These results have important implications for the role a Lewis acid can play in facilitating O-O bond cleavage during the course of O2 activation at non-heme iron centers.
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 July 2013.
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