A.S. Muszyński

Infrared dispersion of the pentachlorophenol–trioctylamine complex

Abstract The optical constants of the hydrogen-bonded complex of pentachlorophenol with tri- n -octylamine in binary systems were determined in the MIR range using a thin film transmission technique, which takes into account the dispersion of the refractive index in the visible region and the absorption in the NIR and MIR ranges. From these data the spectra of both components of the complex electric permittivity in the NIR and MIR regions and related high-frequency dielectric properties of the studied hydrogen-bonded complex were determined and discussed. A considerable increase of the molar vibrational polarization due to the hydrogen bond formation has been demonstrated. The vibrational polarization of the hydrogen bond exceeds the electronic polarization of this bond in the studied complex considerably. The results have been compared with data obtained previously for related systems.

Infrared dispersion of liquid sym-collidine

Abstract The optical constants of liquid sym -collidine were determined in the 12 500–600 cm −1 range using a thin film transmission technique. The complete spectrum of both components of the complex electric permittivity in the near-infrared and infrared regions and the related high-frequency dielectric properties of the liquid were determined and discussed.

Infrared dispersion of the pentachlorophenol-sym-collidine complex

Abstract The optical constants of the hydrogen-bonded complex of pentachlorophenol with 2,4,6-trimethylpyridine in binary systems were determined in the 12500-600 cm −1 range using a new thin film transmission technique, which takes into account the dispersion of the refractive index in the visible region and the absorption in the NIR an MIR ranges. From these data the spectra of both components of the complex electric permittivity in the NIR and MIR regions and related high-frequency dielectric properties of the hydrogen-bonded complex were determined and discussed. A considerable increase of the molar vibrational polarization due to hydrogen bond formation has been demonstrated. The results have been compared with data obtained previously for similar systems.

Thin film FTIR transmission spectra of liquid 2,4,6-trimethylpyridine

Abstract Thin film transmission spectra of liquid sym-collidine were measured in the region 4000-500 cm−1 in cells with thicknesses in the range 3–15 μm. From these data, the spectrum of the complex refractive index was determined in this region. Forty absorption bands were detected and quantitatively described in terms of the band indices, half-widths and integrated intensities. The assignment of numerous bands is presented and discussed. The near-IR spectrum of the liquid is also reported.

Infra-red dispersion of liquid trioctylamine

Abstract The spectra of the real and imaginary components of the complex electric permittivity of liquid tri-n-octylamine were determined in the visible, near infra-red and mid infra-red regions (25 000–600 cm−1). Related high-frequency dielectric properties of the liquid were determined and are discussed.