The direct detection of a hydrogen bond in the solid state by NMR through the observation of a hydrogen-bond mediated (15)N [bond] (15)N J coupling

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 sm...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2002-02, Vol.124 (7), p.1152-1153
Main Authors: Brown, Steven P, Pérez-Torralba, Marta, Sanz, Dionísia, Claramunt, Rosa María, Emsley, Lyndon
Format: Article
Language:English
Subjects:
Amines - chemistry
Hydrogen Bonding
Nitrogen Isotopes
Nuclear Magnetic Resonance, Biomolecular - methods
Nucleic Acid Conformation
Protein Structure, Secondary
Triazoles - chemistry
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Summary: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.
ISSN:0002-7863
DOI:10.1021/ja0172262