Barriers to rotation and conformer populations of two substituted butanes
Abstract
There is reported an n.m.r. study of 2-chloro-2,3-dimethylbutane (I) and 2,2-dichloro-3-methylbutane (II). In (I) the trans-conformation predominates while in (II) the gauche does. gauche–gauche, gauche–trans, and trans–gauche barriers are reported for both compounds.