An Iron(III) Superoxide Corrole from Iron(II) and Dioxygen

摘要

Abstract A new structurally characterized ferrous corrole [FeII(ttppc)]? (1) binds one equivalent of dioxygen to form [FeIII(O2?.)(ttppc)]? (2). This complex exhibits a 16/18O2‐isotope sensitive ν(O‐O) stretch at 1128?cm?1 concomitantly with a single ν(Fe‐O2) at 555?cm?1, indicating it is an η1‐superoxo (“end‐on”) iron(III) complex. Complex 2 is the first well characterized Fe‐O2 corrole, and mediates the following biologically relevant oxidation reactions: dioxygenation of an indole derivative, and H‐atom abstraction from an activated O?H bond.