Molecular polarisability. The apparent conformations of acetic anhydride and diacetyl sulphide as solutes in benzene or carbon tetrachloride

Abstract

The apparent dipole moments and molar Kerr constants found for Ac₂O and Ac₂S as solutes in carbon tetrachloride or benzene are reconcilable with non-planar conformations derivable from the s-cis models by rotating each acetyl group within the range 130–140° in a clockwise sense (looking from the central atom towards Ac).