Raman Spectrum and Molecular Structure of Ozone

Abstract

AN attempt has been made to find the Raman spectrum of ozone, using a 30 per cent solution of ozone in liquid oxygen and a mercury arc as the exciting light. The solution is a dark purple in colour and absorbs the mercury line at 4358 A. quite considerably. The mercury line at 4046 A., however, is scattered fairly strongly, but it has no strong Raman companions. There is an extremely weak doublet corresponding to a mean frequency shift of 1280 cm.⁻¹, but no other Raman lines could be observed even with exposures lasting 80 hours. The spectrograph used was not particularly fast, but photographs of the weak oxygen line at 1550 cm.⁻¹ from 4046 A. could be obtained in 10 hours.