Knowledge Bank

“C-type transitions have been assigned in the Cl-35 and Cl-37 species of cyclopropyl chloride. These together with the a-type spectra previously $reported1$ allow precise determination of all three moments of inertia of both species. An isotopically enriched C-13 sample his been prepared by photochemical chlorination of an enriched sample of cyclopropane, and rotational constants have been obtained for each of the two possible mono-substituted C-13 species. The geometry of the heavy-atom skeleton determined by the substitution method will be presented. The quadrupole coupling constants have been re-evaluated and will also be discussed.”