| Literature DB >> 28338266 |
Graham de Ruiter1, Kurtis M Carsch1, Sheraz Gul2, Ruchira Chatterjee2, Niklas B Thompson1, Michael K Takase1, Junko Yano2, Theodor Agapie1.
Abstract
We report the synthesis, characterization, and reactivity of [LFe3 (PhPz)3 OMn(s PhIO)][OTf]x (3: x=2; 4: x=3), where 4 is one of very few examples of iodosobenzene-metal adducts characterized by X-ray crystallography. Access to these rare heterometallic clusters enabled differentiation of the metal centers involved in oxygen atom transfer (Mn) or redox modulation (Fe). Specifically, 57 Fe Mössbauer and X-ray absorption spectroscopy provided unique insights into how changes in oxidation state (FeIII2 FeII MnII vs. FeIII3 MnII ) influence oxygen atom transfer in tetranuclear Fe3 Mn clusters. In particular, a one-electron redox change at a distal metal site leads to a change in oxygen atom transfer reactivity by ca. two orders of magnitude.Entities:
Keywords: C−H bond oxygenation; clusters; iodosobenzene adduct; multimetallic complexes; oxygen atom transfer
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Year: 2017 PMID: 28338266 PMCID: PMC5505263 DOI: 10.1002/anie.201701319
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN: 1433-7851 Impact factor: 15.336