Double-quantum homonuclear NMR correlation spectroscopy of quadrupolar nuclei subjected to magic-angle spinning and high magnetic field

2009 ◽  
Vol 200 (2) ◽  
pp. 251-260 ◽  
Author(s):  
Q. Wang ◽  
B. Hu ◽  
O. Lafon ◽  
J. Trébosc ◽  
F. Deng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Magic Angle Spinning ◽  
Correlation Spectroscopy ◽  
Double Quantum ◽  
Magic Angle ◽  
Quadrupolar Nuclei ◽  
Angle Spinning

Dynamic Nuclear Polarization-Enhanced Biomolecular NMR Spectroscopy at High Magnetic Field with Fast Magic-Angle Spinning

2018 ◽  
Vol 130 (25) ◽  
pp. 7580-7584 ◽  
Author(s):  
Kristaps Jaudzems ◽  
Andrea Bertarello ◽  
Sachin R. Chaudhari ◽  
Andrea Pica ◽  
Diane Cala-De Paepe ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Nmr Spectroscopy ◽  
High Magnetic Field ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Biomolecular Nmr ◽  
Angle Spinning ◽  
Fast Magic Angle Spinning

Molecular packing of pharmaceuticals analyzed with paramagnetic relaxation enhancement and ultrafast magic angle pinning NMR

2020 ◽  
Vol 22 (23) ◽  
pp. 13160-13170 ◽  
Author(s):  
Xingyu Lu ◽  
Yu Tsutsumi ◽  
Chengbin Huang ◽  
Wei Xu ◽  
Stephen R. Byrn ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Pharmaceutical Compounds ◽  
Magic Angle Spinning ◽  
Paramagnetic Relaxation ◽  
Molecular Packing ◽  
Paramagnetic Relaxation Enhancement ◽  
Magic Angle ◽  
Angle Spinning

Probing molecular details of fluorinated pharmaceutical compounds at a faster acquisition utilizing paramagnetic relaxation enhancement and better resolution from ultrafast magic angle spinning (νrot = 110 kHz) and high magnetic field (B0 = 18.8 T).

scholarly journals A Practical Review of NMR Lineshapes for Spin-1/2 and Quadrupolar Nuclei in Disordered Materials

2020 ◽  
Vol 21 (16) ◽  
pp. 5666 ◽  
Author(s):  
Kuizhi Chen
Keyword(s):  
Chemical Shift ◽  
Structural Disorder ◽  
Magic Angle Spinning ◽  
Second Order ◽  
Double Quantum ◽  
Magic Angle ◽  
Quadrupolar Nuclei ◽  
Isotropic Chemical Shift ◽  
Quadrupolar Coupling ◽  
Angle Spinning

NMR is a powerful spectroscopic method that can provide information on the structural disorder in solids, complementing scattering and diffraction techniques. The structural disorder in solids can generate a dispersion of local magnetic and electric fields, resulting in a distribution of isotropic chemical shift δiso and quadrupolar coupling CQ. For spin-1/2 nuclei, the NMR linewidth and shape under high-resolution magic-angle spinning (MAS) reflects the distributions of isotropic chemical shift, providing a rich source of disorder information. For quadrupolar nuclei, the second-order quadrupolar broadening remains present even under MAS. In addition to isotropic chemical shift, structural disorder can impact the electric field gradient (EFG) and consequently the quadrupolar NMR parameters. The distributions of quadrupolar coupling and isotropic chemical shift are superimposed with the second-order quadrupolar broadening, but can be potentially characterized by MQMAS (multiple-quantum magic-angle spinning) spectroscopy. We review analyses of NMR lineshapes in 2D DQ–SQ (double-quantum single-quantum) and MQMAS spectroscopies, to provide a guide for more general lineshape analysis. In addition, methods to enhance the spectral resolution and sensitivity for quadrupolar nuclei are discussed, including NMR pulse techniques and the application of high magnetic fields. The role of magnetic field strength and its impact on the strategy of determining optimum NMR methods for disorder characterization are also discussed.

Efficient Multispin Homonuclear Double-Quantum Recoupling for Magic-Angle Spinning NMR: 13C−13C Correlation Spectroscopy of U-13C-Erythromycin A

1998 ◽  
Vol 120 (41) ◽  
pp. 10602-10612 ◽  
Author(s):  
Chad M. Rienstra ◽  
Mary E. Hatcher ◽  
Leonard J. Mueller ◽  
Sun ◽  
Stephen W. Fesik ◽  
...  
Keyword(s):  
Magic Angle Spinning ◽  
Correlation Spectroscopy ◽  
Double Quantum ◽  
Magic Angle ◽  
Erythromycin A ◽  
Angle Spinning

scholarly journals Double-quantum filtered heteronuclear correlation spectroscopy under magic angle spinning

2007 ◽  
Vol 31 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Yao-Hung Tseng ◽  
Yi-Ling Tsai ◽  
Tim W.T . Tsai ◽  
Chun-Pin Lin ◽  
Shih-Hao Huang ◽  
...  
Keyword(s):  
Magic Angle Spinning ◽  
Correlation Spectroscopy ◽  
Double Quantum ◽  
Magic Angle ◽  
Heteronuclear Correlation ◽  
Heteronuclear Correlation Spectroscopy ◽  
Angle Spinning

scholarly journals Solid-state 31P and 1H chemical MR micro-imaging of hard tissues and biomaterials with magic angle spinning at very high magnetic field

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Maxime Yon ◽  
Vincent Sarou-Kanian ◽  
Ulrich Scheler ◽  
Jean-Michel Bouler ◽  
Bruno Bujoli ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Solid State ◽  
High Magnetic Field ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Hard Tissues ◽  
Angle Spinning ◽  
Very High
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