Electron paramagnetic resonance spectra of the tert-butylperoxy and tert-butoxy adducts to phenyl tert-butyl nitrone and 2-methyl-2-nitrosopropane. Oxygen-17 hyperfine coupling constants
Electron paramagnetic resonance spectra of the tert-butylperoxy and tert-butoxy adducts to phenyl tert-butyl nitrone and 2-methyl-2-nitrosopropane. Oxygen-17 hyperfine coupling constants
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叔丁基过氧和叔丁氧基加合物与苯基叔丁基硝酮和2-甲基-2-亚硝基丙烷的电子顺磁共振谱。
DOI：
10.1139/v78-028
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发表时间：
1978
影响因子：
1.1
通讯作者：
J. Tait
中科院分区：
文献类型：
--
作者：
J. Howard;J. Tait
富含氧17的叔丁基过氧自由基与苯基叔丁基硝酮反应生成α-叔丁基过氧苄基叔丁基硝基氧，其中aN = 13.42 G，aH = 0.95 G，aoβ = 2.9 G， g = 2.0064。 O-hfsc随温度升高而降低，而H-hfsc随温度升高而升高。该自由基在约 273 K 以上不稳定，被 α-叔丁氧基苄基叔丁基硝基氧取代，aN = 13.62 G，aH = 1.72 G，aoβ = 5.05 G，g = 2.0064。 烷基过氧自由基也被2-甲基-2-亚硝基丙烷捕获，得到烷基过氧化叔丁基硝基氧aN = 28.7 G，aoROO = 4.6 G，g = 2.0056，而烷氧基叔丁基硝基氧的epr参数为aN = 27.25 G， aoRO = 1.03 G，g = 2.0057。
tert-Butylperoxy radicals enriched with oxygen-17 react with phenyl tert-butyl nitrone to give α-tert-butylperoxybenzyl tert-butyl nitroxide with aN = 13.42 G, aH = 0.95 G, aoβ = 2.9 G, g = 2.0064. The O-hfsc decreases with an increase in temperature while the H-hfsc increases with an increase in temperature. This radical is not stable above about 273 K and is replaced by α-tert-butoxybenzyl tert-butyl nitroxide, aN = 13.62 G, aH = 1.72 G, aoβ = 5.05 G, g = 2.0064.Alkylperoxy radicals are also trapped by 2-methyl-2-nitrosopropane to give alkylperoxy tert-butyl nitroxide aN = 28.7 G, aoROO = 4.6 G, g = 2.0056 while the epr parameters for alkoxy tert-butyl nitroxide are aN = 27.25 G, aoRO = 1.03 G, g = 2.0057.