NMR spin-lattice relaxation time T1 calculation for molecular reorientation through inequivalent potential barriers in the case of n-fold (n=2,3,4,6) symmetry axis

Asja Kozak (1)

1 Physics Department

It has been shown that if reorientational jumps of molecules or their parts take place through inequivalent potential barriers, it is possible to draw the information on the multiplicity of the axis of reorientation from the spin-lattice T1 time measurements in the NMR experiment. For the model of n potential wells of which one is deeper than the others, for n = 2, 3, 4, 6 the analytical formulae have been derived for the T1 relaxation time as a function of the correlation time and n. The recurrent form of the formulae for the conditional probability of the well population has been obtained, which permits calculation of the relaxation time for any n.

Mots clés: Physical Sciences

Asja Kozak. NMR spin-lattice relaxation time T1 calculation for molecular reorientation through inequivalent potential barriers in the case of n-fold (n=2,3,4,6) symmetry axis. Molecular Physics, 2008, 106 (20), pp.2345-2356. ⟨10.1080/00268970802459504⟩. ⟨hal-00513230⟩