VIBRATIONAL SPECTROSCOPIC AND FORCE-FIELD STUDIES OF N,N-DIMETHYLTHIOFORMAMIDE, N,N-DIMETHYLFORMAMIDE, THEIR DEUTERATED ANALOGS AND BIS(N,N-DIMETHYLTHIOFORMAMIDE)MERCURY(II) PERCHLORATE

Raman and infrared absorption spectra of N, N-dimethylthioformamide, N , N-dimethyIthioformamide-d(7), N, N-dimethylformamide, N, N-dimethylf ormamide-d(7) and bis( N, N-dimethylthioformamide)mercury(II) perchlor ate have been recorded and analyzed. Assignment of the bands has been made based on normal coordinate analysis, theoretical ab initio SCF an d density functional calculations, and comparisons with similar molecu les, The changes occurring in the vibrational spectra when N,N-dimethy lthioformamide molecules coordinate to a metal ion are discussed.