High-resolution NMR correlation spectra of disordered solids
High-resolution NMR correlation spectra of disordered solids
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DOI：
10.1021/ja0292389
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发表时间：
2003-04-09
影响因子：
15
通讯作者：
Emsley, L
中科院分区：
文献类型：
--
作者：
Sakellariou, D;Brown, SP;Emsley, L
我们展示了如何高分辨率的NMR光谱可以获得固体的光谱通常是扩大由于结构紊乱。该方法依赖于耦合自旋对之间的化学位移的相关性。实验发现，在磷-31和碳-13谱中，相邻自旋之间的化学位移存在很强的关联。这些相关性不仅可以用来提供二维光谱的分辨率，还可以产生相关化学位移的“链”，构成无序材料结构信息的宝贵新来源。
We show how high-resolution NMR spectra can be obtained for solids for which the spectra are normally broadened due to structural disorder. The method relies on correlations in the chemical shifts between pairs of coupled spins. It is found experimentally that there are strong correlations in the chemical shifts between neighboring spins in both phosphorus-31 and carbon-13 spectra. These correlations can be exploited not only to provide resolution in two-dimensional spectra, but also to yield "chains" of correlated chemical shifts, constituting a valuable new source of structural information for disordered materials.