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Characterization of a Paramagnetic Mononuclear Nonheme Iron-Superoxo Complex

O2 bubbling into a THF solution of FeII(BDPP) (1) at -80 degree C generates a reversible bright yellow adduct 2. Characterization by resonance Raman and Mossbauer spectroscopy provides complementary insights into the nature of 2. The former shows a resonance-enhanced vibration at 1125 cm-1, which ca... Full description

Journal Title: Journal of the American Chemical Society 20140718, Vol.136(31), pp.10846-10849
Main Author: Chiang, Chien-Wei
Other Authors: Kleespies, Scott , Stout, Heather , Meier, Katlyn , Li, Po-Yi , Bominaar, Emile , Que, Lawrence , Muenck, Eckard , Lee, Way-Zen
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0002-7863 ; E-ISSN: 1520-5126 ; DOI: 10.1021/ja504410s
Link: http://search.proquest.com/docview/1762065284/?pq-origsite=primo
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title: Characterization of a Paramagnetic Mononuclear Nonheme Iron-Superoxo Complex
format: Article
creator:
  • Chiang, Chien-Wei
  • Kleespies, Scott
  • Stout, Heather
  • Meier, Katlyn
  • Li, Po-Yi
  • Bominaar, Emile
  • Que, Lawrence
  • Muenck, Eckard
  • Lee, Way-Zen
subjects:
  • Bubbling
  • Exchange
  • Vibration
  • Bonding
  • Adducts
  • Mossbauer Spectroscopy
  • Iron
  • Ligands
  • Analysis (MD)
  • Chemical Analysis (Ep)
  • Chemical Analysis (Ed)
  • Chemical Analysis (EC)
ispartof: Journal of the American Chemical Society, 20140718, Vol.136(31), pp.10846-10849
description: O2 bubbling into a THF solution of FeII(BDPP) (1) at -80 degree C generates a reversible bright yellow adduct 2. Characterization by resonance Raman and Mossbauer spectroscopy provides complementary insights into the nature of 2. The former shows a resonance-enhanced vibration at 1125 cm-1, which can be assigned to the nu (O-O) of a bound superoxide, while the latter reveals the presence of a high-spin iron(III) center that is exchange-coupled to the superoxo ligand, like the FeIII-O2- pair found for the O2 adduct of 4-nitrocatechol-bound homoprotocatechuate 2,3-dioxygenase. Lastly, 2 oxidizes dihydroanthracene to anthracene, supporting the notion that FeIII-O2- species can carry out H atom abstraction from a C-H bond to initiate the 4-electron oxidation of substrates proposed for some nonheme iron enzymes.
language: eng
source:
identifier: ISSN: 0002-7863 ; E-ISSN: 1520-5126 ; DOI: 10.1021/ja504410s
fulltext: no_fulltext
issn:
  • 00027863
  • 0002-7863
  • 15205126
  • 1520-5126
url: Link


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titleCharacterization of a Paramagnetic Mononuclear Nonheme Iron-Superoxo Complex
creatorChiang, Chien-Wei ; Kleespies, Scott ; Stout, Heather ; Meier, Katlyn ; Li, Po-Yi ; Bominaar, Emile ; Que, Lawrence ; Muenck, Eckard ; Lee, Way-Zen
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subjectBubbling ; Exchange ; Vibration ; Bonding ; Adducts ; Mossbauer Spectroscopy ; Iron ; Ligands ; Analysis (MD) ; Chemical Analysis (Ep) ; Chemical Analysis (Ed) ; Chemical Analysis (EC)
descriptionO2 bubbling into a THF solution of FeII(BDPP) (1) at -80 degree C generates a reversible bright yellow adduct 2. Characterization by resonance Raman and Mossbauer spectroscopy provides complementary insights into the nature of 2. The former shows a resonance-enhanced vibration at 1125 cm-1, which can be assigned to the nu (O-O) of a bound superoxide, while the latter reveals the presence of a high-spin iron(III) center that is exchange-coupled to the superoxo ligand, like the FeIII-O2- pair found for the O2 adduct of 4-nitrocatechol-bound homoprotocatechuate 2,3-dioxygenase. Lastly, 2 oxidizes dihydroanthracene to anthracene, supporting the notion that FeIII-O2- species can carry out H atom abstraction from a C-H bond to initiate the 4-electron oxidation of substrates proposed for some nonheme iron enzymes.
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titleCharacterization of a Paramagnetic Mononuclear Nonheme Iron-Superoxo Complex
descriptionO2 bubbling into a THF solution of FeII(BDPP) (1) at -80 degree C generates a reversible bright yellow adduct 2. Characterization by resonance Raman and Mossbauer spectroscopy provides complementary insights into the nature of 2. The former shows a resonance-enhanced vibration at 1125 cm-1, which can be assigned to the nu (O-O) of a bound superoxide, while the latter reveals the presence of a high-spin iron(III) center that is exchange-coupled to the superoxo ligand, like the FeIII-O2- pair found for the O2 adduct of 4-nitrocatechol-bound homoprotocatechuate 2,3-dioxygenase. Lastly, 2 oxidizes dihydroanthracene to anthracene, supporting the notion that FeIII-O2- species can carry out H atom abstraction from a C-H bond to initiate the 4-electron oxidation of substrates proposed for some nonheme iron enzymes.
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abstractO2 bubbling into a THF solution of FeII(BDPP) (1) at -80 degree C generates a reversible bright yellow adduct 2. Characterization by resonance Raman and Mossbauer spectroscopy provides complementary insights into the nature of 2. The former shows a resonance-enhanced vibration at 1125 cm-1, which can be assigned to the nu (O-O) of a bound superoxide, while the latter reveals the presence of a high-spin iron(III) center that is exchange-coupled to the superoxo ligand, like the FeIII-O2- pair found for the O2 adduct of 4-nitrocatechol-bound homoprotocatechuate 2,3-dioxygenase. Lastly, 2 oxidizes dihydroanthracene to anthracene, supporting the notion that FeIII-O2- species can carry out H atom abstraction from a C-H bond to initiate the 4-electron oxidation of substrates proposed for some nonheme iron enzymes.
doi10.1021/ja504410s
urlhttp://search.proquest.com/docview/1762065284/
date2014-07-08