Dipole Moments and Hyperfine Structure of the Group IV/VI Diatomic Molecules

Abstract

Stark effect measurements on the pure rotational transitions of the Group IV/VI compounds are reported. The electric dipole moments of the molecules with the highest natural abundance were determined for the ground vibrational state. For SnS the variation of the dipole moment with vibrational state was also measured. The nuclear quadrupole hyperfine structure, which originates from the ³³S and ⁷³Ge nuclei, has been measured for nearly all of the molecules containing these nuclei. A systematic trend in the dipole moments of the Group IV/VI compounds is reported and compared with the alkali halides.