Internal rotation potential function for anisole in solution: a liquid crystal NMR study

Abstract

The 1 H and 13 C NMR spectra of anisole-methyl- 13 C dissolved in a nematic solvent ZLI 1115 have been analyzed. The set of dipolar couplings obtained is used to test various models for the internal rotations about the ring-O and O-CH 3 bonds. It is shown that the data are not consistent with the simplest models for this motion: a 2-fold jump about the ring-O bond between planar structures or a four-site jump between nonplanar structures, in both cases with a three-site jump model for motion about the O-CH 3 bond