19 and 20, the W1/2 of the 33S absorption responds to changes in the solvent environment. The band width is directly related to the correlation time, which can be factorized into the components: molecular size, solution viscosity, and On the basis of the solvent dependence of WlI2 for both 19 and 20, it appears that the rotational motions of these sulfones are more restricted in chloroform and dimethyl sulfoxide solvents than in acetone and methanol, which is ...
