Infra-Red and Raman Spectra of Polyatomic Molecules XIV. Propylene

Abstract

The infra-red spectrum of gaseous propylene has been studied from 3 to 25μ with a spectrometer using fluorite, rocksalt and KBr prisms. A normal coordinate calculation of the fundamental frequencies has been made, using force constants obtained principally from ethylene and ethane. This information, when combined with the known Raman spectrum, permits an assignment of fifteen of the twenty fundamental frequencies and puts limits on four of the remaining frequencies.