Elektrisches Dipolmoment und Mikrowellenrotationsspektrum von SnO, SnS, PbO und PbS

Abstract

Stark-effect measurements on pure rotational transitions of SnO, SnS, PbO, and PbS are described. Measurements on the ground vibrational state of the most abundant molecules resulted in the following electric dipole moments: 120Sn16O: μ0= (4,32 ± 0,10) D, 120Sn32S: μ0= (3,18 ±0,10) D,208Pb16O: μ0 = (4,64 ± 0,30) D, 208Pb32S : μ0 = (3,59 ± 0,10) D. Due to improved resolution and sensivity of the spectrometer, the rotational spectra of SnS and PbS were measured in more detail and with greater accuracy than previously. The derived rotational constants, Y01, Y11, Y21, Y31 and Y02, are reported.