| Abstrakt: |
The polarized infrared spectra of a,a,a-trichloroacetamide (TCA) and its deuterated compound (TCA-d) have been measured in the 400–4000 cm-1region, and the infrared spectra of the series, CClnH3-nCONH2(n=0–3), and their deuterated compounds have been observed in the solid state. On the basis of the results, the vibrational assignments, the orientation of TCA, the intermolecular hydrogen bonds, and the inductive effect of the introduction of the chlorine atom, and the conformation of TCA have been discussed. It has been proposed that TCA in the solid state has two conformations, which are in linear-chain associations through hydrogen bonds. |
