Vibrational Spectroscopic Study of Adamantane, 1-Chloro Adamantane and 1-Bromo Adamantane

The infrared and polarized Raman spectra of adamantane, 1-chloro adamantane and 1-bromo adamantane were measured on the cubic specimen of single crystals as well as solutions and trigonal specimens, respectively. On the basis of the results of the polarization data and group theory, vibrational spectroscopic study of adamantan has been performed. As for heigh-temperature phase of cubic adamantane, it is considered that the phase has an orientationally ordered crystal structure