Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 3, 2016
Previous Article Next Article

Methyl and t-butyl group rotation in a molecular solid: 1H NMR spin-lattice relaxation and X-ray diffraction

Author affiliations

Abstract

We report solid state 1H nuclear magnetic resonance spin-lattice relaxation experiments and X-ray diffractometry in 2-t-butyldimethylsilyloxy-6-bromonaphthalene. This compound offers an opportunity to simultaneously investigate, and differentiate between, the rotations of a t-butyl group [C(CH3)3] and its three constituent methyl groups (CH3) and, simultaneously, a pair of ‘lone’ methyl groups (attached to the Si atom). The solid state 1H relaxation experiments determine activation energies for these rotations. We review the models for the dynamics of both ‘lone’ methyl groups (ones whose rotation axes do not move on the NMR time scale) and models for the dynamics of the t-butyl group and its constituent methyl groups (whose rotation axes reorient on the NMR time scale as the t-butyl group rotates).

Graphical abstract: Methyl and t-butyl group rotation in a molecular solid: 1H NMR spin-lattice relaxation and X-ray diffraction

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Aug 2015, accepted on 07 Dec 2015 and first published on 08 Dec 2015


Article type: Paper
DOI: 10.1039/C5CP04994F
Author version
available:
Download author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2016,18, 1720-1726

  •   Request permissions

    Methyl and t-butyl group rotation in a molecular solid: 1H NMR spin-lattice relaxation and X-ray diffraction

    P. A. Beckmann, C. E. Moore and A. L. Rheingold, Phys. Chem. Chem. Phys., 2016, 18, 1720
    DOI: 10.1039/C5CP04994F

Search articles by author

Spotlight

Advertisements