Methyl Dynamics Studied by ENDOR Spectroscopy: A New Method
Methyl Dynamics Studied by ENDOR Spectroscopy: A New Method
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通过 ENDOR 光谱研究甲基动力学：一种新方法
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
U. Segre
中科院分区：
文献类型：
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作者：
M. Brustolon;T. Cassol;L. Micheletti;U. Segre
我们提出了一种新的方法来研究经典的甲基旋转自由基利用ENDOR线强度和它们的温度变化。所提出的方法适用于低势垒以及高势垒系统。该方法是基于甲基转动对质子接触耦合常数的调节。这产生了一个特定的弛豫路径，它以戏剧性的方式影响决定ENDOR线强度的EPR去饱和。
We present a new method to study classical methyl group rotation in radicals by exploiting the ENDOR line intensities and their temperature variation. The proposed method works for low barrier as well as high barrier systems. The method lies on the fact that the methyl rotation modulates the proton contact coupling constant. This gives rise to a specific relaxation path which affects in a dramatic way the EPR desaturation determining the ENDOR line intensity.