The vibrational Raman spectra of selenium trioxide

Article abstract of DOI:10.1016/0584-8539(87)80132-0

The vibrational Raman spectra of selenium trioxide have been observed in the solid and vapour phases for the same sample.The spectrum of the vapour phase, which essentially arises from the monomeric species SeO3, has provided for the first time values of the Raman-active ν₁, ν₃ and ν₄ wavenumbers of SeO3.The spectrum of the solid phase represents an improvement on previous work and has enabled a partial assignment of the tetrameric species (SeO3)4 to be made.