Normal Vibration Frequencies of CD3F. Structure of CH3F and CD3F from Infrared and Microwave Spectra

Abstract

The infrared absorption spectrum of CD3F has been studied. Simultaneously, the infrared spectrum of CH3F was reinvestigated. Fundamental vibration frequencies for CD3F were found together with Coriolis coupling factors for the three degenerate vibrations in CH3F and CD3F. The fine-structure analysis gave reliable values for the large rotational constants of CD3F and CH3F. The structure of the methyl fluoride molecule is discussed.