IN RESEARCHING THE STRUCTURE OF CONDENSED MEDIA, THE MANIFESTATION OF ROTATION- SHAKING MOTIONS RELATED TO THE LAWS OF INTERMOLECULAR INTERACTION IN THE VIBRATIONAL SPECTRA OF MOLECULES.
In this article, the relaxation processes resulting from vibrational and rotational motions for the bromobenzene molecule in a wide
spectral range (0÷3500 cm -1 ) were investigated using light Raman scattering (RS) spectra. On the basis of experimental and
quantum-chemical calculations, it was determined that the hydrogen-bonded carbon atoms in bromobenzene play a key role in
the manifestation of H-bonds. In the range of lower frequencies, high-intensity RS spectra were observed, and the mechanisms of
their formation were explained in connection with the rotational-shaking motions of the bromobenzene molecule, which has a
complex structure. This makes it possible to analyze the rotational oscillations and draw appropriate conclusions in the formation
of the RS spectrum in the future in the lower frequency range.
1. Kirillov S.A., Morresi A., Paolatoni M. Recovery of the depolarization ratio of single lines from overlapping isotropic and
anisotropic Raman profiles and assignment of molecular vibrations, with special reference to toluene and toluene-d8 //J.
Raman Spectrosc . 2007. V.38. P.383-388
2. Pogorelov V., Bulavin L., Doroshenko J., Fesjin O., Veretennikov O. The structure of liquid alcohols and the temperature
dependence of vibrational bandwidth //J. Molec. Stuc. 2004. V. 708. V1-3. P.61-65
3. Ka B.J., Geva E. Vibrational Energy Relaxation of Polyatomic Molecules in Liquid Solution via the Linearized
Semiclassical Method //J. Phys. Chem. A 2006, V.110. P. 9555-9567.
4. Wang D., Mittauer K., Reynolds N. Raman scattering of carbon disulfide: The temperature effect // Am. J. Phys., 2009. V.
77. N. 12. P. 1130-1134.
5. Lindner J.,Vohringer P., Pshenichnikov M.S., Cringus D., Wiersma D.A., Mostovoy M. Vibrational relaxation of pure liquid
water // Chemical Physics Letters 2006. V. 421 P. 329–333.
6. Bakker H.J., Lock A.J., Madsen D. Strong feedback effect in the vibrational relaxation of liquid water // Chemical Physics
Letters. 2004. V. 384. P. 236–241.
7. Eshchanov B., Otajonov Sh., Isamatov A. Study of Molecular Dynamics of Condensed States of a Substance by
Spectroscopy //Ukraine Journal of Physics, 2014, vol.9, No.3, pp.254–256.
8. Eshchanov B., Otajonov Sh., Isamatov A., Babajanov D. Dynamics of Relaxation Processes in Liquids: Analysis of
Oscillation and Orientation Spectra //Journal of Molecular Liquids, 2015, vol.202, pp.148–152.
9. Takasu Y., Matsumoto S., Fujii Y., Nishio I. Raman study of the low temperature behavior of tetrahydrofuran molecule in
the cage of clathrate hydrate // Chemical Physics Letters. 2015. V. 627. P. 39–43.
10. Vasylieva A., Doroshenko I., Vaskivskyi Y., Chernolevska Y., Pogorelov V. FTIR study of condensed water structure // J.
Mol. Struct., 2018, V. 1167, P.232-238.
11. Eshchanov, B., Otajonov, S., Xudoyberdiyeva, D. Dynamics of rotational oscillations in molecules xylene by the low
frequencies spectrum of the raman scattering of light //Journal of Advanced Research in Dynamical and Control
Systems, 2020, 12 (6 Special Issue), pp. 713–718
12. Гордон А., Форд Р. Спутник химика. М. МИР. 1976. 443 стр.
13. Варгафтик Н. Б. Справочник по теплофизическим свойствам газов и жидкостей. -М: Наука. -1972.-720 стр.
14. Свердлов Л.М., Ковнер М.А., Крайнов Е.Н. Колебательные спектры многоатомных молекул. М: Наука. 1970.
15. Вейсбергер А., Проскауэр Э., Риддик Дж., Тупс Э. Органические растворители. Физические свойства и методы
очистки. М: Изд-во иностр. лит. 1958. 419 стр.
16. Вульфсон Н.С. Препаративная органическая химия. М: Хим. лит-ра. 1959. 88 стр.
17. Eshchanov B., Otajonov Sh., Mukhamedov G., Doroshenko I., Karpova O., Allakulieva Sh. Experimental study of raman
spectra of some aromatic hydrocarbons //Ukraine Journal of Physics, 2020, vol.65, No.4, pp.284–290.
18. Tanabe K., Hiraichi J. Truncation effects on second moments of vibrational bands //Spektrocop feta 1980, V.36, P. 341
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