Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy

Abstract While 1H-1H J-couplings are the cornerstone of all spectral assignment methods in solution-state NMR, they are yet to be observed in solids. Here we observe 1H-1H J-couplings in plastic crystals of (1S)-(−)-camphor in solid-state NMR at magic angle spinning (MAS) rates of 100 kHz and above....

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Main Authors: Daria Torodii, Jacob B. Holmes, Kristof Grohe, Rodrigo de Oliveira-Silva, Sebastian Wegner, Dimitrios Sakellariou, Lyndon Emsley
Format: Article
Language:English
Published: Nature Portfolio 2024-12-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-55126-9
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author Daria Torodii
Jacob B. Holmes
Kristof Grohe
Rodrigo de Oliveira-Silva
Sebastian Wegner
Dimitrios Sakellariou
Lyndon Emsley
author_facet Daria Torodii
Jacob B. Holmes
Kristof Grohe
Rodrigo de Oliveira-Silva
Sebastian Wegner
Dimitrios Sakellariou
Lyndon Emsley
author_sort Daria Torodii
collection DOAJ
description Abstract While 1H-1H J-couplings are the cornerstone of all spectral assignment methods in solution-state NMR, they are yet to be observed in solids. Here we observe 1H-1H J-couplings in plastic crystals of (1S)-(−)-camphor in solid-state NMR at magic angle spinning (MAS) rates of 100 kHz and above. This is enabled in this special case because the intrinsic coherence lifetimes at fast MAS rates become longer than the inverse of the 1H-1H J couplings. For example, at 160 kHz MAS the coherence lifetimes are longer than 20 ms, corresponding to refocused linewidths of less than 15 Hz. As a result, we are able to record two-dimensional 1H-1H J resolved spectra that allow the observation and measurement of 1H-1H J-couplings in solid camphor. The J-couplings also lead to unambiguous through-bond correlations in 1H-1H refocused incredible natural abundance double quantum transfer (INADEQUATE) and uniform-sign cross-peak double-quantum-filtered correlation spectroscopy (UC2QFCOSY) experiments.
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spelling doaj-art-77a24ff20186491dac62a6d6061490202025-01-05T12:36:23ZengNature PortfolioNature Communications2041-17232024-12-011511610.1038/s41467-024-55126-9Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopyDaria Torodii0Jacob B. Holmes1Kristof Grohe2Rodrigo de Oliveira-Silva3Sebastian Wegner4Dimitrios Sakellariou5Lyndon Emsley6Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL)Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL)Bruker BioSpin GmbH & Co KGKU Leuven, M2S, cMACS, Celestijnenlaan 200FBruker BioSpin GmbH & Co KGKU Leuven, M2S, cMACS, Celestijnenlaan 200FInstitut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL)Abstract While 1H-1H J-couplings are the cornerstone of all spectral assignment methods in solution-state NMR, they are yet to be observed in solids. Here we observe 1H-1H J-couplings in plastic crystals of (1S)-(−)-camphor in solid-state NMR at magic angle spinning (MAS) rates of 100 kHz and above. This is enabled in this special case because the intrinsic coherence lifetimes at fast MAS rates become longer than the inverse of the 1H-1H J couplings. For example, at 160 kHz MAS the coherence lifetimes are longer than 20 ms, corresponding to refocused linewidths of less than 15 Hz. As a result, we are able to record two-dimensional 1H-1H J resolved spectra that allow the observation and measurement of 1H-1H J-couplings in solid camphor. The J-couplings also lead to unambiguous through-bond correlations in 1H-1H refocused incredible natural abundance double quantum transfer (INADEQUATE) and uniform-sign cross-peak double-quantum-filtered correlation spectroscopy (UC2QFCOSY) experiments.https://doi.org/10.1038/s41467-024-55126-9
spellingShingle Daria Torodii
Jacob B. Holmes
Kristof Grohe
Rodrigo de Oliveira-Silva
Sebastian Wegner
Dimitrios Sakellariou
Lyndon Emsley
Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
Nature Communications
title Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
title_full Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
title_fullStr Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
title_full_unstemmed Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
title_short Observation of 1H-1H J-couplings in fast magic-angle-spinning solid-state NMR spectroscopy
title_sort observation of 1h 1h j couplings in fast magic angle spinning solid state nmr spectroscopy
url https://doi.org/10.1038/s41467-024-55126-9
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