Molecular Dipole Moments and Stark Effects. III. Dipole Moment Determinations

Dipole moments of eight molecules were determined by the Stark splittings of the rotational transitions in the microwave region. The molecules and their moments in Debye units are: As${\mathrm{F}}_3$, 2.815±0.025; C${\mathrm{H}}_3$I, 1.647±0.014; C${\mathrm{H}}_3$Cl, 1.869±0.010; C${\mathrm{H}}_3$Br, 1.797±0.015; C${\mathrm{H}}_3$C${\mathrm{F}}_3$, 2.321±0.034; P${\mathrm{F}}_3$, 1.025±0.009; ${\mathrm{N}}_2$O, 0.166±0.002; and ClCN, 2.802±0.020. In all cases Stark effects followed very closely theoretical expectations.