The Microwave Spectra, Structure, and Dipole Moments of Ethylene Oxide and Ethylene Sulfide

Abstract

The microwave spectra of C2 12H4O, C12C13H4O, C2 12D4O, C2 12H4S32, C2 12H4S34, and C2 12D4S32 have been determined. For each isotopic species three moments of inertia are obtained. From the 9 moments of inertia for each compound, a set of ``effective'' bond distances and angles (5 in number) have been selected. These ``effective'' bond distances are all self consistent to 0.002A or better. A brief discussion of the resulting structure is given. The dipole moments of C2H4O and C2H4S were determined from the magnitude of the Stark splitting.