LOW-FREQUENCY RAMAN AND FAR-INFRARED SPECTRA OF ACETONE CHLOROFORM MIXTURES/

Low-frequency Raman and far-infrared spectra of liquid acetone/chlorof orm mixtures show a different behaviour on the concentrations. The fre quency of the band maximum of the low-frequency Raman spectra in the R (<(nu)over bar>)-representation shows a blue shift Linearly with the m ole fraction of acetone. This behaviour is in accordance with the beha viour of the isothermal compressibility of acetone/chloroform mixtures . The frequency of the band maximum of the far-infrared spectra shows a more complex behaviour as a function of the relative concentrations. This can be explained in terms of an additional absorption arising fr om a complex between acetone and chloroform. (C) 1997 Elsevier Science B.V.