Collect. Czech. Chem. Commun. 1981, 46, 856-860

The conformation of aryl carbonates. A dipole moment study

Otto Exnera and Václav Jehličkab

a Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
b Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


The dipole moments of diaryl carbonates I-V in benzene solution are consistent with the Z,Z-conformation (A) in which the conformation of simple esters is repeated in the two moieties. The E,Z-form (B) was not detected; it may be either present as a quite small fraction or only with specific, overcrowded structures.