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Satellite-transition MAS NMR of low-gamma nuclei at natural abundance: Sensitivity, practical implementation, and application to K-39 (I=3/2) and Mg-25 (I=5/2)

journal contribution
posted on 2023-06-07, 14:56 authored by Nicholas DowellNicholas Dowell, Sharon E Ashbrook, Stephen Wimperis
Satellite-transition magic angle spinning (STMAS) is a recently introduced technique for recording high-resolution NMR spectra of quadrupolar nuclei in solids. We present numerical calculations of STMAS signal intensity as a function of radio frequency field strength (v(1)) and spinning rate (v(R)) and show that the sensitivity advantage of STMAS over the older multiple-quantum technique (MQMAS) is greatest for low v(1) field strengths and high v(R) rates, making STMAS particularly suitable for the study of low-gamma nuclei. The practical implementation of STMAS in NMR of low-y nuclei is discussed and several experimental examples of high-resolution K-39 (I = 3/2) and Mg-25 (I = 5/2) NMR spectra are presented, including Mg-25 spectra of brucite (Mg(OH)(2)), diopside (CaMgSi2O6), and talc (Mg3Si4O10(OH)(2)) recorded at the natural Mg-25 abundance of 10%.

History

Publication status

  • Published

Journal

Journal of Physical Chemistry B

ISSN

1520-6106

Publisher

American Chemical Society

Issue

35

Volume

108

Page range

13292-13299

Department affiliated with

  • Clinical and Experimental Medicine Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2009-02-25

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