Infra-red spectrum and normal coordinate analysis of tungsten trioxide

An attempt has been made to establish the symmetry of tungsten trioxide on the basis of observed absorption bands in the infra red spectra and normal coordinate analysis. Assuming Csub(3v) symmetry, observed fundamental bands have been assigned as : ν1(A1) = 1020 cm-1, ν2(A1) = 300 cm-1, ν3(E') = 1045 cm-1 and ν4(E') = 350 cm-1. The results compare fairly well with other isoelectronic systems like MoO3. (author)