2563-98-6Relevant academic research and scientific papers
Substituent effect on the infrared and Raman spectra of N-(substituted-phenyl)-2,2-dichloroacetamides, XyC6H 5-yNHCOCHCl2 (X = o/m/p-CH3 or Cl; y = 1, 2 or 3)
Kumar, B.H. Arun,Gowda, B. Thimme
, p. 231 - 235 (2007/10/03)
Several substituted N-(phenyl)-2,2-dichloroacetamides of the configuration XyC6H5-yNHCOCHCl2 (where, X = H, CH3 or Cl and y = 1, 2 or 3) have been synthesized and their infrared and Raman spectra measured in the solid state with the objective of correlating CO and NH frequencies of these substituted phenyldichloroacetamides with those of substituted phenylchloroacetamides and trichloroacetamides. The study reveals that there is no systematic variation in the frequencies with the substitution. The effect of substitution in the phenyl ring in terms of electron-donating and electron-withdrawing groups could not be generalized. The same trend is observed even with disubstituted phenyl-2,2-dichloroacetamides, which may be due to the varying crystalline states of the amides as the spectra are measured in the solid state. The infrared and Raman frequencies of the amides of the configuration XyC6H5-yNHCOR (where, X = H, CH3 or Cl and y = 1, 2 or 3 and R = CH2Cl, CHCl2, CCl3) have also been examined for comparison purpose. The entire data indicate that neither the infrared CO or NH absorption frequencies nor the Raman scattered CO or NH frequencies show regular trends in all these compounds for the stated above.
