Polarized components of C=O vibrations Raman spectra for ethylacetate, acetone, and aggregation of molecules

F. H. Tukhvatullin; A. Jumabaev; U. N. Tashkenbaev; H. A. Hushvaktov; A. A. Absanov

doi:10.1117/12.451387

1 November 2002 Polarized components of C=O vibrations Raman spectra for ethylacetate, acetone, and aggregation of molecules

F. H. Tukhvatullin, A. Jumabaev, U. N. Tashkenbaev, H. A. Hushvaktov, A. A. Absanov

Author Affiliations +

Proceedings Volume 4812, Nonlinear Spectroscopy; (2002) https://doi.org/10.1117/12.451387
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

For liquid ethylacetate the frequency maximums for parallel (I_|| (v)) and perpendicular (I_&highmod;(v)) polarized components of C=O vibrations band in Raman spectra are differed on 5.3 cm^-1. At dilution ethylacetate in CCl₄ and heptane or heating in this difference is decreased by displacement of I_|| (v) maximum to the I_&highmod;(v) maximum. In polar solvent, nitrometane, the picture is different - the frequency maxima difference is decreased though the displacement of I_&highmod;(v) band maximum to the I_|| (v)one. The results were explained by the complexity of C=O vibration bands, and existence within the band of two lines with the different depolarization ratio. The complexity of the band is the result existence in liquid ethylacetate the monomer molecules and molecular aggregations.

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F. H. Tukhvatullin, A. Jumabaev, U. N. Tashkenbaev, H. A. Hushvaktov, and A. A. Absanov "Polarized components of C=O vibrations Raman spectra for ethylacetate, acetone, and aggregation of molecules", Proc. SPIE 4812, Nonlinear Spectroscopy, (1 November 2002); https://doi.org/10.1117/12.451387

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