Articles | Volume 2, issue 1
https://doi.org/10.5194/mr-2-499-2021
https://doi.org/10.5194/mr-2-499-2021
Research article
 | 
01 Jul 2021
Research article |  | 01 Jul 2021

Residual dipolar line width in magic-angle spinning proton solid-state NMR

Matías Chávez, Thomas Wiegand, Alexander A. Malär, Beat H. Meier, and Matthias Ernst

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Residual Dipolar Linewidth in Magic-Angle Spinning Proton Solid-State NMR Matias Chavez, Thomas Wiegand, Alexander A. Malär, Beat H. Meier, and Matthias Ernst https://doi.org/10.3929/ethz-b-000490555

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Short summary
Sample rotation around the magic angle averages out the dipolar couplings in homonuclear spin systems in a first-order approximation. However, in higher orders, residual coupling terms remain and lead to a broadening of the spectral lines. We investigate the source of this broadening and the effects on the powder line shape in small spin systems with and without chemical shifts. We show that one can expect different scaling behavior as a function of the spinning frequency for the two cases.