Abstract
The temperature dependences of 35Cl nuclear quadrupole resonance frequencies nu Q, spin-lattice relaxation times T1, linewidth Delta nu and spin-spin relaxation time T2 of the solid 2,3,6-trichloroanisole are reported. Three resonance lines are observed and the experimental measurement of nu Q(T) data are analysed by means of the Bayer-Kushida theory. It appears that only low-frequency lattice modes contribute to the temperature dependence of nu Q(T). The T1(T) relaxation data show a normal behaviour and no thermally activated motion is detected. The linewidth measurements reveal that the electric field gradient affecting the Cl atoms of the molecule undergoes some sort of thermally activated motional narrowing. The T2(T) data are somewhat scarce, showing only a normal temperature behaviour for one of the chlorine atoms of the molecule while for the others it is of the order of T2*.
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