Light-induced N2O production from a non-heme iron-nitrosyl dimer

Yunbo Jiang, Takahiro Hayashi, Hirotoshi Matsumura, Loi H. Do, Amit Majumdar, Stephen J. Lippard, Pierre Moënne-Loccoz

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18 Scopus citations

Abstract

Two non-heme iron-nitrosyl species, [Fe2(N-Et-HPTB)(O2CPh)(NO)2](BF4)2 (1a) and [Fe2(N-Et-HPTB)(DMF)2(NO)(OH)](BF4)3 (2a), are characterized by FTIR and resonance Raman spectroscopy. Binding of NO is reversible in both complexes, which are prone to NO photolysis under visible light illumination. Photoproduction of N2O occurs in high yield for 1a but not 2a. Low-temperature FTIR photolysis experiments with 1a in acetonitrile do not reveal any intermediate species, but in THF at room temperature, a new {FeNO}7 species quickly forms under illumination and exhibits a η(NO) vibration indicative of nitroxyl-like character. This metastable species reacts further under illumination to produce N2O. A reaction mechanism is proposed, and implications for NO reduction in flavodiiron proteins are discussed.

Original languageEnglish (US)
Pages (from-to)12524-12527
Number of pages4
JournalJournal of the American Chemical Society
Volume136
Issue number36
DOIs
StatePublished - Sep 10 2014

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Jiang, Y., Hayashi, T., Matsumura, H., Do, L. H., Majumdar, A., Lippard, S. J., & Moënne-Loccoz, P. (2014). Light-induced N2O production from a non-heme iron-nitrosyl dimer. Journal of the American Chemical Society, 136(36), 12524-12527. https://doi.org/10.1021/ja504343t