The vapour phase Raman spectra, Raman band contour analyses, Coriolis constants, force constants, and values for thermodynamic functions of the symmetric top molecules POF3, POCl3, VOF3, VOCl3, PSCl3and FClO3

The vapour-phase Raman spectra of the molecules POF3, POCl3, VOF3, VOCl3, PSCl3 and FClO3 have been recorded in sealed tubes at 22–230°C, and accurate values for the fundamentals are reported. The Raman band contours of the e species fundamentals have been analysed to yield Coriolis constants from which e species force constants have been calculated. Raman and infra-red-based Coriolis constants are compared. Values for various thermodynamic functions of the molecules have been evaluated from the new values for the fundamentals, and from the most recent structural parameters.