Title :

Through‐space ¹¹ B– ²⁷ Al correlation: Influence of the recoupling channel

Author(s) :

Zheng, Mingji [Auteur]
University of Chinese Academy of Sciences [Beijing] [UCAS]
Xin, Shaohui [Auteur]
Wang, Qiang [Auteur]
Trebosc, Julien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Xu, Jun [Auteur]
Qi, Guodong [Auteur]
Feng, Ningdong [Auteur]
Lafon, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Deng, Feng [Auteur]

Journal title :

Magnetic Resonance in Chemistry

Abbreviated title :

Magn Reson Chem

Volume number :

59

Pages :

1062-1076

Publication date :

2021-09

ISSN :

0749-1581, 1097-458X

HAL domain(s) :

Chimie/Chimie inorganique

English abstract : [en]

Through-space heteronuclear correlation (D-HETCOR) experiments based on heteronuclear multiple-quantum correlation (D-HMQC) and refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) sequences have been ...
Show more >Through-space heteronuclear correlation (D-HETCOR) experiments based on heteronuclear multiple-quantum correlation (D-HMQC) and refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) sequences have been proven to be useful approaches for the detection of the spatial proximity between half-integer quadrupolar nuclei in solids under magic-angle spinning (MAS) conditions. The corresponding pulse sequences employ coherence transfers mediated by heteronuclear dipolar interactions, which are reintroduced under MAS by radiofrequency irradiation of only one of the two correlated nuclei. We investigate herein using numerical simulations of spin dynamics and solid-state NMR experiments on magnesium aluminoborate glass how the choice of the channel to which the heteronuclear dipolar recoupling is applied affects the transfer efficiency of D-HMQC and D-RINEPT sequences between 11B and 27Al nuclei. Experimental results show that maximum transfer efficiency is achieved when the recoupling scheme is applied to the channel, for which the spin magnetization is parallel to the B0 axis in average.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

RMN et matériaux inorganiques (RM2I)

Submission date :

2022-03-24T09:03:00Z
2023-11-24T10:00:17Z