Abstract Examination of the electric dipole moments of 2-benzoylpyrrole and di-(2-pyrryl)- ketone, and of their sulphur analogues, measured in cyclohexane and/or carbon tetrachloride, benzene and dioxane, allows their preferred conformations in these media to be determined. 2-Benzoyl-N-methylpyrrole and di-(2-N-methylpyrryl) ketone, and the corresponding thioketones, were examined in benzene and their conformations ...
