The Direct Detection of a Hydrogen Bond in the Solid State by NMR through the Observation of a Hydrogen-Bond Mediated 15N-15N J Coupling

详细信息    查看全文

• 作者：Steven P. Brown ; Marta Pé ; rez-Torralba ; Dioní ; sia Sanz ; Rosa Marí ; a Claramunt ; and Lyndon Emsley
• 刊名：Journal of the American Chemical Society
• 出版年：2002
• 出版时间：February 20, 2002
• 年：2002
• 卷：124
• 期：7
• 页码：1152 - 1153
• 全文大小：36K
• 年卷期：v.124,no.7(February 20, 2002)
• ISSN：1520-5126

文摘

A new method for detecting hydrogen bonds in the solid state is presented. Using two-dimensional NMR correlation experiments, it is shown that a hydrogen-bond mediated J coupling can be observed in a powder under magic-angle spinning conditions, even though the J coupling is 2 orders of magnitude smaller than the dominant anisotropic interactions encountered in solid-state NMR. Specifically, the observation of a pair of peaks in a two-dimensional ¹⁵N-¹⁵N solid-state INADEQUATE experiment due to two nitrogens that have no covalent connectivity is attributed to the presence of a J coupling across a linking hydrogen bond.