Abstract
A comprehensive study of the temperature dependence of both nuclear quadrupole resonance frequency, ν q( T), and spin-lattice relaxation time, T 1( T), in the range 50 to 220 K, on p-toluenesusulphonyl chloride shows that each substituent group on the benzene ring contributes with a different and independent relaxation mechanism. These spin-lattice relaxation processes are due to the particular molecular and crystalline structure of this compound.
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