Observation of a Cu(II)(2) (μ-1,2-peroxo)/Cu(III)(2) (μ-oxo)(2) equilibrium and its implications for copper-dioxygen reactivity.
Observation of a Cu(II)(2) (μ-1,2-peroxo)/Cu(III)(2) (μ-oxo)(2) equilibrium and its implications for copper-dioxygen reactivity.
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Cu(II)(2) (μ-1,2-peroxo)/Cu(III)(2) (μ-oxo)(2) 平衡的观察及其对铜-分子氧反应性的影响。
DOI:
10.1002/anie.201402166
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发表时间:
2014-05-05
影响因子:
16.6
通讯作者:
Solomon, Edward I.
中科院分区:
文献类型:
--
作者:
Kieber-Emmons, Matthew T.;Ginsbach, Jake W.;Wick, Patrick K.;Lucas, Heather R.;Helton, Matthew E.;Lucchese, Baldo;Suzuki, Masatatsu;Zuberbuehler, Andreas D.;Karlin, Kenneth D.;Solomon, Edward I.
Synthesis of small molecule Cu2O2 adducts has provided insight into the related biological systems and their reactivity patterns including the interconversion of the CuII2(μ-η2:η2-peroxo) and CuIII2(μ-oxo)2 isomers. In this study, absorption spectroscopy, kinetics, and resonance Raman data show that the oxygenated product of [(BQPA)CuI]+ initially yields an “end-on peroxo” species, that subsequently converts to the thermodynamically more stable “bis-μ-oxo” isomer (Keq = 3.2 at −90 °C). Calibration of density functional theory calculations to these experimental data suggest that the electrophilic reactivity previously ascribed to end-on peroxo species is in fact a result of an accessible bis-μ-oxo isomer, an electrophilic Cu2O2 isomer in contrast to the nucleophilic reactivity of binuclear CuII end-on peroxo species. This study is the first report of the interconversion of an end-on peroxo to bis-μ-oxo species in transition metal-dioxygen chemistry.
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影响因子:
15
作者:
Hayashi, H;Fujinami, S;Kitagawa, T
通讯作者:
Kitagawa, T
影响因子:
15
作者:
NASIR, MS;COHEN, BI;KARLIN, KD
通讯作者:
KARLIN, KD
影响因子:
4.6
作者:
WEI, N;MURTHY, NN;KARLIN, KD
通讯作者:
KARLIN, KD
DOI:
10.1073/pnas.1208718109
发表时间:
2012-07-03
影响因子:
11.1
作者:
Ginsbach, Jake W.;Kieber-Emmons, Matthew T.;Solomon, Edward I.
通讯作者:
Solomon, Edward I.
影响因子:
56.9
作者:
Mirica, LM;Vance, M;Stack, TDP
通讯作者:
Stack, TDP