Vibration Spectra and Molecular Structure V. Infra-Red Studies on Light and Heavy Acetic Acids

The infra-red absorption spectra of CH3COOH and CH3COOD between 1 and 15.5μ have been obtained with a rocksalt prism spectrometer. The association of CH3COOD has been studied and a value of the heat of dissociation obtained. Positions of the hydrogen and deuterium bonded O–H–O and O–D–O frequencies are given. Making certain assumptions, a value for the shorter O–H and O–D distances in the dimer rings is found to be 1.07A.