Phase distortion-free paramagnetic NMR spectra

The NMR spectra of paramagnetic substances can feature shifts over thousands of ppm. In high magnetic field instruments, this corresponds to extreme offsets, which make it challenging or impossible to achieve uniform excitation without phase distortion. Furthermore, because of the intrinsic presence...

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Autor principal:	Enrico Ravera
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Pnmr First-order phasing Broadband excitation Medical physics. Medical radiology. Nuclear medicine R895-920 Physics QC1-999
Acceso en línea:	https://doaj.org/article/75d57c82afd542f7ae8b5f297b1808c0
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spelling	oai:doaj.org-article:75d57c82afd542f7ae8b5f297b1808c02021-11-06T04:36:22ZPhase distortion-free paramagnetic NMR spectra2666-441010.1016/j.jmro.2021.100022https://doaj.org/article/75d57c82afd542f7ae8b5f297b1808c02021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666441021000133https://doaj.org/toc/2666-4410The NMR spectra of paramagnetic substances can feature shifts over thousands of ppm. In high magnetic field instruments, this corresponds to extreme offsets, which make it challenging or impossible to achieve uniform excitation without phase distortion. Furthermore, because of the intrinsic presence of a dead time during which spins freely evolve, a further phase distortion occurs. A decade ago, a processing approach based on the analysis of the statistics of the phase of the spectrum was proposed to denoise NMR spectra. In this manuscript it is demonstrated that this approach is applicable to obtain paramagnetic NMR spectra that are free of phase distortion, even though the quantitative information of peaks intensities is lost. This is demonstrated on the high field spectra of a prototypical nickel(II)-complex and through the analysis of simulated data.Enrico RaveraElsevierarticlePnmrFirst-order phasingBroadband excitationMedical physics. Medical radiology. Nuclear medicineR895-920PhysicsQC1-999ENJournal of Magnetic Resonance Open, Vol 8, Iss , Pp 100022- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pnmr First-order phasing Broadband excitation Medical physics. Medical radiology. Nuclear medicine R895-920 Physics QC1-999
spellingShingle	Pnmr First-order phasing Broadband excitation Medical physics. Medical radiology. Nuclear medicine R895-920 Physics QC1-999 Enrico Ravera Phase distortion-free paramagnetic NMR spectra
description	The NMR spectra of paramagnetic substances can feature shifts over thousands of ppm. In high magnetic field instruments, this corresponds to extreme offsets, which make it challenging or impossible to achieve uniform excitation without phase distortion. Furthermore, because of the intrinsic presence of a dead time during which spins freely evolve, a further phase distortion occurs. A decade ago, a processing approach based on the analysis of the statistics of the phase of the spectrum was proposed to denoise NMR spectra. In this manuscript it is demonstrated that this approach is applicable to obtain paramagnetic NMR spectra that are free of phase distortion, even though the quantitative information of peaks intensities is lost. This is demonstrated on the high field spectra of a prototypical nickel(II)-complex and through the analysis of simulated data.
format	article
author	Enrico Ravera
author_facet	Enrico Ravera
author_sort	Enrico Ravera
title	Phase distortion-free paramagnetic NMR spectra
title_short	Phase distortion-free paramagnetic NMR spectra
title_full	Phase distortion-free paramagnetic NMR spectra
title_fullStr	Phase distortion-free paramagnetic NMR spectra
title_full_unstemmed	Phase distortion-free paramagnetic NMR spectra
title_sort	phase distortion-free paramagnetic nmr spectra
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/75d57c82afd542f7ae8b5f297b1808c0
work_keys_str_mv	AT enricoravera phasedistortionfreeparamagneticnmrspectra
_version_	1718443861379907584

Phase distortion-free paramagnetic NMR spectra

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