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)

Dowell, N. G., Ashbrook, S. E. and Wimperis, S. (2004) 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 of Physical Chemistry B, 108 (35). pp. 13292-13299. ISSN 1520-6106

Full text not available from this repository.

Abstract

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%.

Item Type: Article
Schools and Departments: Brighton and Sussex Medical School > Clinical and Laboratory Investigation
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Depositing User: Nicholas Dowell
Date Deposited: 25 Feb 2009
Last Modified: 02 Jul 2012 14:26
URI: http://sro.sussex.ac.uk/id/eprint/2102
📧 Request an update