Tailoring the nuclear Overhauser effect for the study of small and medium-sized molecules by solvent viscosity manipulation - Université de Reims Champagne-Ardenne
Journal Articles Progress in Nuclear Magnetic Resonance Spectroscopy Year : 2021

Tailoring the nuclear Overhauser effect for the study of small and medium-sized molecules by solvent viscosity manipulation

Abstract

The nuclear Overhauser effect (NOE) is a consequence of cross-relaxation between nuclear spins mediated by dipolar coupling. Its sensitivity to internuclear distances has made it an increasingly important tool for the determination of throughspace atom proximity relationships within molecules of sizes ranging from the smallest systems to large biopolymers. With the support of sophisticated FT-NMR techniques, the NOE plays an essential role in structure elucidation, conformational and dynamic investigations in liquid-state NMR. The efficiency of magnetization transfer by the NOE depends on the molecular rotational correlation time, whose value depends on solution viscosity. The magnitude of the NOE between 1 H nuclei varies from +50 % when molecular tumbling is fast to-100% when it is slow, the latter case corresponding to the spin diffusion limit. In an intermediate tumbling regime, the NOE may be vanishingly small. Increasing the viscosity of the solution increases the motional correlation time, and as a result, otherwise unobservable NOEs may be revealed and brought close to the spin diffusion limit. The goal of this review is to report the resolution of structural problems that benefited from the manipulation of the negative NOE by means of viscous solvents, including examples of molecular structure determination, conformation elucidation and mixture analysis (the ViscY method). Contents
Fichier principal
Vignette du fichier
PNMRS-D-20-00007Nuzillard_cleaned.pdf (5.04 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03191060 , version 1 (28-06-2021)

Identifiers

Cite

Pedro Lameiras, Jean-Marc Nuzillard. Tailoring the nuclear Overhauser effect for the study of small and medium-sized molecules by solvent viscosity manipulation. Progress in Nuclear Magnetic Resonance Spectroscopy, 2021, 123, pp.1-50. ⟨10.1016/j.pnmrs.2020.12.001⟩. ⟨hal-03191060⟩
107 View
172 Download

Altmetric

Share

More