Raman spectroscopic study on solute–solvent interactions in saturated 2,2’-bipyridine and benzene solution

Hongying Mei (), Shibo Du (), Shuxiang Sun (), Xinyan Zheng (), Huali Hao (), Juan Xiong () and Hua Wen ()
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Hongying Mei: Huanghuai University
Shibo Du: Huanghuai University
Shuxiang Sun: Huanghuai University
Xinyan Zheng: Huanghuai University
Huali Hao: Huanghuai University
Juan Xiong: Huanghuai University
Hua Wen: Huanghuai University

The European Physical Journal B: Condensed Matter and Complex Systems, 2025, vol. 98, issue 8, 1-6

Abstract: Abstract Raman scattering measurements are performed on the pure benzene (B), 2,2’-bipyridine (BD), and the saturated BD-B solution at 295 and 80 K to investigate the solute–solvent interaction on the vibrational properties. The spectrum of the BD-B shows almost a simply addition of the individual spectra of BD and B, suggesting no strong interaction among BD and B molecules. At low temperature, the solution crystallizes and its spectrum shows obvious changes including the inter- and intramolecular modes, especially the modes associated with the lattice vibrations, C–H in-plane bending, C–C interring stretching, and high-frequency C–H stretching. Our work contributes to understand the interaction between organic solute and solvent. Graphical abstract

Date: 2025
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DOI: 10.1140/epjb/s10051-025-01027-9

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