Raman Spectroscopic Study of PCI5-AICI3 Melts

Raman spectra have been recorded from PCl5‐AlCl3 melts containing 30,50,63.7,70,80 and 90 mol% AlCl3, respectively. Raman shifts were identified from the species: PCl5, PCl4,+ AlCl4,− AlCl7− and Al2Cl6. A higher AlxCly−z complex exists in melts with more than 70 mol% AlCl3 and is characterized by Raman shifts of 100, 297 and 395 cm−1.

The relative molar scattering intensities of the strongest MCl stretching vibrations of the melt species have been estimated relative to the intensity of the total symmetric stretching vibration of tetrahedral PCl4+.