A Pulsed Proton Magnetic Resonance Study of Some Organic Compounds

Abstract

Spin-lattice relaxation times (T1) of protons in polycrystalline dimethyl sulfone, stearic acid, stearyl alcohol. trimethylamine-N-oxide. tertiary-butylhydrazine hydrochloride and tertiary-butyl carbamate have been measured over a range of temperatures by pulsed proton magnetic resonance. Except for tertiary-butyl carbamate a single minimum in T1 was observed for all the compounds. The T1 results have been interpreted by considering the methyl group reorientations about the C3 axis and the role of the spin diffusion of the other protons to the methyl protons in the compounds. The double minima in T1 for tertiary-butyl carbamate have been attributed to reorientations of methyl groups in the tertiary-butyl group about the [FORMULA OMITTED] axis and reorientations of each methyl group about its C3 axis. The spin-lattice relaxation parameters have been determined. © 1984, Walter de Gruyter. All rights reserved.