Vibrational spectra of liquid di-n-propylether

The spectrum of the complex refractive index in the 15,000–100 cm−1 region was determined for liquid di-n-propylether from transmission studies. In the MIR region very thin layers with thicknesses of a few micrometers had to be used to obtain reliable data. FT-Raman spectra of the liquid are also reported. Identifications for numerous bands observed in the liquid phase were proposed basing on results of a conformational analysis and modelling of spectra using DFT calculations.