Modeling job: Protonation of a closed seven‐coordinate side‐on heme peroxide can switch its spin state from high‐ to low‐spin and convert the η2 binding fashion into a monodentate configuration to afford the corresponding hydroperoxide (see scheme). The end‐on low‐spin ferric hydroperoxo–heme species bear a covalently appended axial imidazole ligand and are easily prepared.
Dioxygen activation by iron complexes. The search for reactive intermediates
作者:Matthias Selke、Marlene F. Sisemore、Raymond Y.N. Ho、Diana L. Wertz、Joan S. Valentine
DOI:10.1016/s1381-1169(96)00394-9
日期:1997.3
of oxygen activation by ironcomplexes are described: (1) Oxygen atom transfer by ferric porphyrin peroxocomplexes to electron-deficientolefins via a nucleophilic mechanism, (2) oxidative dehydrogenation of a cyclam complex, probably involving a radical intermediate, and (3) stereospecific, non-radical hydroxylation of alkanes by organic peracids catalyzed by ironcomplexes by an unknown mechanism