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Updated: May 26, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Efficient theory of dipolar recoupling in solid-state nuclear magnetic resonance of rotating solids using
Eugene S Mananga1, Alicia E Reid, Thibault Charpentier
1Commissariat A L' Energie Atomique, Neurospin/I2BM, Laboratoire de Resonance Magnetique Nucleaire, CEA-Saclay, Bât 145, Point Courrier 156F-91191 Gif-sur-Yvette cedex, France. emananga@gc.cuny.edu
Abstract:
This article describes the use of an alternative expansion scheme called Floquet-Magnus expansion (FME) to study the dynamics of spin system in solid-state NMR. The main tool used to describe the effect of time-dependent interactions in NMR is the average Hamiltonian theory (AHT). However, some NMR experiments, such as sample rotation and pulse crafting, seem to be more conveniently described using the Floquet theory (FT). Here, we present the first report highlighting the basics of the Floquet-Magnus expansion (FME) scheme and hint at its application on recoupling sequences that excite more efficiently double-quantum coherences, namely BABA and C7 radiofrequency pulse sequences. The use of Λ(n)(t) functions available only in the FME scheme, allows the comparison of the efficiency of BABA and C7 sequences.
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