通过梯度增强二维多键相关实验对异核远程耦合进行准确精确的测量。
Accurate and precise measurement of heteronuclear long-range couplings by a gradient-enhanced two-dimensional multiple-bond correlation experiment.
作者信息
Sheng S, van Halbeek H
机构信息
Department of Chemistry, Georgia State University, Atlanta, Georgia, 30303-3083, USA.
出版信息
J Magn Reson. 1998 Feb;130(2):296-9. doi: 10.1006/jmre.1997.1318.
We propose a phase-sensitive gradient-enhanced two-dimensional heteronuclear multiple-bond correlation (psge-2D HMBC) experiment for speedy, accurate, and precise measurement of 2JCH and 3JCH. The experiment does not suppress one-bond correlations. Rather, the value of a desired long-range JCH is obtained from the pertinent cross-peak pattern in the HMBC spectrum, using the corresponding 1JCH correlation pattern as reference. The application of the proposed experiment is illustrated for the trisaccharide raffinose.
我们提出了一种相敏梯度增强二维异核多键相关（psge - 2D HMBC）实验，用于快速、准确且精确地测量(^{2}J_{CH})和(^{3}J_{CH})。该实验不抑制一键相关。相反，利用相应的(^{1}J_{CH})相关模式作为参考，从HMBC谱中相关的交叉峰模式获得所需远程(J_{CH})的值。以三糖棉子糖为例说明了所提出实验的应用。
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