SCHEDULED MAINTENANCE
Solid-state MAS NMR spectra of benzyldimethyl(isopropyl)ammonium bromide 1 show evidence of a high activation energy for rotation of one of the N-methyl groups (Ea= 28 kJ mol–1)whilst a powder X-ray diffraction study of 1 shows that one of the N-methyl groups is indeed exceptionally hindered in the solid.
F. G. Riddell, P. G. Bruce, P. Lightfoot and M. Rogerson, J. Chem. Soc., Chem. Commun., 1994, 209 DOI: 10.1039/C39940000209
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