An anionic, tetragonal copper(II) superoxide complex.
An anionic, tetragonal copper(II) superoxide complex.
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DOI:
10.1021/ja106244k
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发表时间:
2010-11-17
影响因子:
15
通讯作者:
Tolman WB
中科院分区:
文献类型:
--
作者:
Donoghue PJ;Gupta AK;Boyce DW;Cramer CJ;Tolman WB
Insight into copper-oxygen species proposed as intermediates in oxidation catalysis is provided by the identification of a Cu(II)-superoxide complex supported by a sterically hindered, pyridinedicarboxamide ligand. A tetragonal, end-on superoxide structure is proposed based on DFT calculations and UV-vis, NMR, EPR, and resonance Raman spectroscopy. The complex yields a trans-1,2-peroxodicopper(II) species upon reaction with [(tmpa)Cu(CH3CN)]OTf, and, unlike other known Cu(II)-superoxide complexes, acts as a base rather than an electrophilic (H-atom abstracting) reagent in reactions with phenols.
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