A mononuclear nonheme iron(III)-peroxo complex binding redox-inactive metal ions
- Authors
- Lee, YM (Lee, Yong-Min); Bang, S (Bang, Suhee); Kim, YM (Kim, Yun Mi); Cho, J (Cho, Jaeheung); Hong, S (Hong, Seungwoo); Nomura, T (Nomura, Takashi); Ogura, T (Ogura, Takashi); Troeppner, O (Troeppner, Olive; Ivanovic-Burmazovic, I (Ivanov; Sarangi, R (Sarangi, Ritimukta; Fukuzumi, S (Fukuzumi, Shunich; Nam, W (Nam, Wonwoo)
- Issue Date
- Oct-2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL SCIENCE, v.4, no.10, pp 3917 - 3923
- Pages
- 7
- Journal Title
- CHEMICAL SCIENCE
- Volume
- 4
- Number
- 10
- Start Page
- 3917
- End Page
- 3923
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147521
- DOI
- 10.1039/c3sc51864g
- ISSN
- 2041-6520
2041-6539
- Abstract
- Redox-inactive metal ions that function as Lewis acids play pivotal roles in modulating reactivities of oxygen-containing metal complexes in a variety of biological and biomimetic reactions, including dioxygen activation/formation and functionalization of organic substrates. Mononuclear nonheme iron(III)-peroxo species are invoked as active oxygen intermediates in the catalytic cycles of dioxygen activation by nonheme iron enzymes and their biomimetic compounds. Here, we report mononuclear nonheme iron(III)-peroxo complexes binding redox-inactive metal ions, [(TMC)Fe-III(O-2)]+-M3+ (M3+ Sc3+ and Y3+; TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), which are characterized spectroscopically as a 'side-on' iron(III)-peroxo complex binding a redox-inactive metal ion, (TMC) Fe-III(mu,eta(2):eta(2)-O-2)-M3+ (2-M). While an iron(III)-peroxo complex, [(TMC) Fe-III(O-2)](+), does not react with electron donors (e.g., ferrocene), one-electron reduction of the iron(III)-peroxo complexes binding redox-inactive metal ions occurs readily upon addition of electron donors, resulting in the generation of an iron(IV)oxo complex, [(TMC) FeIV(O)](2+) (4), via heterolytic O-O bond cleavage of the peroxide ligand. The rates of the conversion of 2-M to 4 are found to depend on the Lewis acidity of the redox-inactive met
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