Some Absorption Bands in the Far Infrared

Abstract

The following bands have been located in the far infrared spectra by the method of residual rays: cis‐dichloroethylene at 170 cm⁻¹; trans‐dichloroethylene at 265 cm⁻¹ and 192 cm⁻¹; phosphorus trichloride at 190 cm⁻¹; trans and ``gauche'' 1,2 dichloroethane at 223 cm⁻¹ and 125 cm⁻¹; propylene at 177 cm⁻¹; acetaldehyde at 245 cm⁻¹ and 120 cm⁻¹; methyl alcohol at 190 cm⁻¹, 161 cm⁻¹, and 120 cm⁻¹; carbon suboxide at 192 cm⁻¹.