Abstract: | Frequency and form are deduced for the normal modes. The calculated and observed deformation frequencies of the CH3O group agree only if the force field of that group has CS symmetry. The C-O, P-O, P=S, and P-Cl modes are examined for characteristic behavior. The integral intensities of the corresponding bands are reported for trichlorothiophosphate, methyldichlorothiophosphate, dimethylchlorothiophosphate, and trimethylthiophospate.The behavior of the integral intensity of the P=S band is discussed. |