Proton relaxation in solid aniline and some methyl derivatives

Abstract

Spin-lattice relaxation time studies are reported of protons in the molecular solids: aniline, N-methylaniline, NN-dimethylaniline and 2,5-dimethylaniline. The temperature dependence of the relaxation times T₁ and T_1ρ are interpreted in terms of the possible hindered motions occurring in the lattice. The restricting potential barriers are deduced and compared with those derived from dielectric studies. Some new thermal data are also presented.