Dioxygen activation by a non-heme iron(II) complex: formation of an iron(IV)-oxo complex via C-H activation by a putative iron(III)-superoxo species.
Iron(III)-superoxo intermediates are believed to play key roles in oxygenation reactions by non-heme iron enzymes. We now report that a non-heme iron(II) complex activates O(2) and generates its corresponding iron(IV)-oxo complex in the presence of substrates with weak C-H bonds (e.g., olefins and alkylaromatic compounds). We propose that a putative iron(III)-superoxo intermediate initiates the O(2)-activation chemistry by abstracting a H atom from the substrate, with subsequent generation of a high-valent iron(IV)-oxo intermediate from the resulting iron(III)-hydroperoxo species.
Lee
Yong-Min
YM
Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea.
Hong
Seungwoo
S
Morimoto
Yuma
Y
Shin
Woonsup
W
Fukuzumi
Shunichi
S
Nam
Wonwoo
W
D005296:Ferrous Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*
D005296:Ferrous Compounds; D010100:Oxygen