Comparison of through-space homonuclear correlations between quadrupolar nuclei in solids - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of Magnetic Resonance Année : 2023

Comparison of through-space homonuclear correlations between quadrupolar nuclei in solids

Résumé

Various two-dimensional (2D) homonuclear correlation experiments have been proposed to observe proximities between identical half-integer spin quadrupolar nuclei in solids. These experiments select either the single- or double-quantum coherences during the indirect evolution period, t1. We compare here the efficiency and the robustness of the 2D double-quantum to single-quantum (DQ-SQ) and SQ-SQ homonuclear correlations for two half-integer spin quadrupolar isotopes subject to small chemical shift anisotropy (CSA): 11B with a nuclear spin I = 3/2 and 27Al with I = 5/2. Such a comparison is performed using experiments on two model samples: Li2B4O7 for 11B and AlPO4-14 for 27Al. For both isotopes, the DQ-SQ homonuclear correlations are recommended since they allow probing the proximities between nuclei with close or identical frequencies. In the case of small or moderate isotropic chemical shift differences (e.g. 11B) the [SR221] or [BR221] bracketed DQ-SQ recoupling schemes are recommended; whereas it is the BR221 un-bracketed one otherwise (e.g. 27Al).
Fichier principal
Vignette du fichier
HOMCOR_quad_post-print_2.pdf (4.03 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04095767 , version 1 (21-11-2023)

Identifiants

Citer

Jennifer S. Gómez, Julien Trebosc, Nghia Tuan Duong, Frederique Pourpoint, Olivier Lafon, et al.. Comparison of through-space homonuclear correlations between quadrupolar nuclei in solids. Journal of Magnetic Resonance, 2023, Journal of Magnetic Resonance, 348, pp.107388. ⟨10.1016/j.jmr.2023.107388⟩. ⟨hal-04095767⟩
24 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More