Solid-state nitrogen-15 NMR and quantum chemical study of N,N-dimethylaniline derivatives

The components of the nitrogen chemical shift (CS) tensor of a series of para substituted N-N-dimethylaniline derivatives were examined through measurement of (Super 15)N NMR spectra of powdered samples and through quantum chemical calculations on the isolated molecules. The methodology has proved the feasibility of performing N cross-polarization experiments on nonspinning powder samples at natural isotopic abundance.