Second-order quadrupolar shifts as an NMR probe of fast molecular-scale dynamics in solids

Kurkiewicz, T., Thrippleton, M. J. and Wimperis, S. (2009) Second-order quadrupolar shifts as an NMR probe of fast molecular-scale dynamics in solids. Chemical Physics Letters, 467(4-6), pp. 412-416. (doi: 10.1016/j.cplett.2008.11.038)

Abstract

Molecular-scale dynamics on the nanosecond timescale or faster can have a measurable influence on isotropic NMR frequencies of quadrupolar nuclei. Although previously studied in solution, where it is usually referred to as the ‘dynamic shift’, this effect is less well known in solids. Here we demonstrate that multiple-quantum NMR measurements of isotropic quadrupolar shifts are a simple way to probe nanosecond timescale motions in solids. We measure the ¹¹B (spin I = 3/2) shifts of the resolved boron sites in ortho-carborane as a function of temperature and interpret the results in terms of the known rapid tumbling dynamics.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Wimperis, Professor Stephen
• Authors: Kurkiewicz, T., Thrippleton, M. J., and Wimperis, S.
• Subjects: Q Science > QD Chemistry
• College/School: College of Science and Engineering > School of Chemistry
• Journal Name: Chemical Physics Letters
• Publisher: Elsevier BV
• ISSN: 0009-2614
• ISSN (Online): 1873-4448
• Published Online: 18 November 2008
• Copyright Holders: Copyright © 2008 Elsevier
• First Published: First published in Chemical Physics Letters 467(4-6):412-416
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
42618	1	Satellite-transition MAS - a new technique for high-resolution quadrupolar NMR	Stephen Wimperis	Engineering & Physical Sciences Research Council (EPSRC)	GR/T23824/01	Chemistry