Infrared and Raman Spectra of Vinylene Carbonate

Abstract

The infrared and Raman spectra of vinylene carbonate have been observed from 50 to 4000 cm⁻¹ and most of the fundamental modes of vibration have been assigned. The B₂ ring‐puckering vibration is at 258 cm⁻¹ in the liquid, in good agreement with the results of microwave intensity measurements. A short C–O bond length, on the order of 1.15–1.17 Å, is indicated by the high frequency of the carbonyl stretching frequency.