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Updated: Jun 12, 2026
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Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
[Effect of the change in fundamental Raman scattering coefficient with the concentration on Fermi resonance in binary
Dong-Fei Li1, Xiu-Lan Jiang, Cheng-Lin Sun
1State Key Laboratory of Superhard Materials, Jilin University, Changchun 130021, China. goodldf@yahoo.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|May 26, 2010
Summary
The study reveals that Raman scattering coefficients for benzene (C6H6) and carbon disulfide (CS2) solutions change significantly with concentration. CS2
Area of Science:
- Molecular Spectroscopy
- Physical Chemistry
- Raman Spectroscopy
Context:
- Binary solutions of carbon disulfide (CS2) and benzene (C6H6) are common in chemical research.
- Understanding molecular interactions and spectral properties is crucial for chemical analysis.
Purpose:
- To investigate the impact of relative concentration on the Raman scattering coefficients of CS2 and C6H6 fundamentals.
- To analyze the influence of these changes on Fermi resonance phenomena within the binary solution.
Summary:
- Raman spectra of CS2 and C6H6 binary solutions were measured at varying concentrations.
- Both fundamental v1 intensities (992 cm-1 for C6H6, 656 cm-1 for CS2) exhibited dramatic changes with concentration.
- CS2's v1 fundamental intensity changes significantly affected its Fermi resonance (v1 - 2v2) and v2 fundamental, while C6H6's v1 had minimal impact on its Fermi resonance (v1 +v6-v8).
- Analysis was performed using J. F. Bertran theory and group theory.
Impact:
- Provides insights into concentration-dependent spectral behavior in binary solutions.
- Contributes to a deeper understanding of molecular interactions and resonance effects in mixed systems.
- Offers a foundation for quantitative analysis of CS2/C6H6 mixtures using Raman spectroscopy.
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