Temperature dependence of isotropic Raman intramolecular vibrational band contour formation in some liquids: the computer research of methyl iodide

V. D. Danchuk; A. P. Kravchuk

doi:10.1117/12.486668

11 December 2002 Temperature dependence of isotropic Raman intramolecular vibrational band contour formation of some liquids. The computer research of methyl iodide

V. D. Danchuk, A. P. Kravchuk

Author Affiliations +

Proceedings Volume 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals; (2002) https://doi.org/10.1117/12.486668
Event: XV International School on Spectroscopy of Molecules and Crystals, 2001, Chernivsti, Ukraine

Abstract

The theoretical analysis of resonant dynamic intermolecular interaction influence on formation of isotropic intramolecular vibrational bands contours in liquids at various temperatures, stipulated by existence of molecules local ordering, has been conducted within the framework of cluster-continuum modle. The new mechanism of isotropic spectral bands narrowing with temperature, observed for some liquids, is offered. This mechanism is stipulated by growing similarity for frequencies of resonant splitting intramolecular vibrational components as structural elements of appropriate spectral bands owing to temperature disording of local molecular surroundings in liquids. On example of liquid methyl iodide the computer analysis of proposed mechanism influence on formation of liquids vibrational spectral function at various temperatures is conducted. The satisfactory consent between results of computer analysis and appropriate experimental data is obtained.

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V. D. Danchuk and A. P. Kravchuk "Temperature dependence of isotropic Raman intramolecular vibrational band contour formation of some liquids. The computer research of methyl iodide", Proc. SPIE 4938, Selected Papers from the International Conference on Spectroscopy of Molecules and Crystals, (11 December 2002); https://doi.org/10.1117/12.486668

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