A simple treatment of relaxation in AX2 all-proton systems shows that under certain conditions the effective spin-lattice relaxation time of the total A or X signal depends on the method of measurement. The calculations have been confirmed by measurements on 1,3-dinitro-2-chlorobenzene in CDCl 3 and 1,1,2-trichloroethane in CDCl3, (CD 3)2CO and C6D6. The experimental relaxation times, together with nuclear Overhauser enhancements, have been used to determine internuclear distances and rotational correlation times. There is good agreement with values of these parameters obtained from independent sources.
|Number of pages||7|
|Journal||Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics|
|Publication status||Published - 1 Dec 1976|