The infrared absorption spectrum of liquid 1,2,4-trifluorobenzene has been obtained in the region 2–38μ with the aid of LiF, NaCl, KBr, and KRS−5 prisms. The Raman spectrum of the liquidh as been photographed with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A, and depolarization ratios have been measured for the stronger Raman bands. A complete assignment of fundamental vibration frequencies is given, and the spectra are interpreted in detail.
The infrared absorption of liquid 1,4-bis(trifluoromethyl) benzene has been obtained in the region 2–22μ with the aid of LiF, NaCl, and KBr prisms. The Raman spectrum has been photographed with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A. A nearly complete assignment of fundamental vibration frequencies is given, and the spectra are interpreted in detail.
The infrared absorption spectra of gaseous and liquid fluorobenzene have been obtained in the regions 2–22μ and 2–38μ, respectively, with the aid of LiF, NaCl, KBr, and KRS−5 prisms. The Raman spectrum of the liquid phase has been photographed with a three-prism glass spectrograph of linear dispersion 15 A/mm at 4358A. A complete assignment of fundamental vibration frequencies is given, and the spectra are interpreted in detail.
The infrared absorption spectrum of liquid p-fluorotoluene has been obtained in the region 2–38μ with the aid of LiF, NaCl, KBr, and KRS−5 prisms. The stronger bands of the gas phase have been scanned with NaCl and KBr prisms. The Raman spectrum of the liquid has been photographed with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A. A complete assignment of fundamental vibration frequencies is given, and the spectra are interpreted in detail.
The infrared absorption spectra of gaseous and liquid 1,4-difluorobenzene have been obtained in the regions 2–22μ and 2–38μ, respectively, with the aid of LiF, NaCl, KBr, and KRS−5 prisms. The Raman spectrum of the liquid phase has been photographed with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A. Depolarization ratios have been measured for the stronger Raman bands. A complete assignment of fundamental vibration frequencies has been made, and the spectra have been interpreted in detail. The nonplanar frequencies have been calculated with the aid of force constants determined for related molecules
The infrared absorption spectrum of liquid 1,3-difluorobenzene has been obtained in the region 2–22μ with the aid of LiF, NaCl, and KBr prisms. The contours of the strong infrared bands of the gaseous phase have also been observed in the region 5–22μ. The Raman spectrum of the liquid has been photographed with a three-prism glass spectrograph of linear dispersion 15 A/mm at 4358A, and depolarization ratios have been measured for the stronger Raman bands. A complete assignment of fundamental vibration frequencies is given and the spectra are interpreted in detail.
The infrared spectra of ethyl fluoride and 1,1-difluoroethane vapors have been obtained in the egion from 2 to 38μ, and the spectra of the liquids from 2 to 22μ, with the aid of LiF, NaCl, KBr, and KRS-5 prisms. The Raman spectra of both compounds were studied in the liquid phase with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A. Depolarization ratios were determined for the stronger bands. The Raman spectrum of 1,1-difluoroethane was also obtained for the gaseous phase. A complete assignment of fundamental frequencies is proposed for each molecule and used in a detailed interpretation of the spectra and for the calculation of thermodynamic functions over the temperature range 298–600°K and at the boiling point.
