Internal rotation barriers in esters of N,N-dimethyldithiocarbamic acid

The method of a complete analysis of the shape of the lines was used to determine the activation parameters of hindered rotation around the N-C bond in the molecules of N,N-dimethyldithiocarbamic acid esters. The value of the barrier in these compounds is lower than in the thioamides, and depends on the electronic and steric nature of the substituent on the sulfur atom.