The infra-red spectra of polymers and related monomers. II

The infra-red spectra of some polymers containing chlorine have been measured, and also those of the related monomers. Vibrational analyses and a study of band contours with vinyl chloride, vinyl bromide, vinylidene chloride, and vinylidene bromide, have made it possible to assign magnitudes to many of the normal vibration frequencies. The vibration frequencies of the series of vinyl halides have been correlated. The rotational structure associated with some of the vibration bands has been discussed in relation to the molecular structure. Similar measurements and considerations have been applied to chloroprene. The spectra of polyvinyl chloride, polyvinylidene chloride, and some halothenes and neoprenes have been examined. As a preliminary to the correlation of the absorption frequencies with vibrations of the nuclear skeletons, the spectra of some simple chlorinated paraffins have been measured.