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Vibrational Analysis Based on Cavity-Enhanced Raman Spectroscopy: Cyclohexane
Qing-Ying Yang1, Qin Yang2, Yi-Fan Song3
1Hefei National Research Center of Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
Abstract:
Cyclohexane (CAS: 110-82-7), a colorless organic solvent derived from petroleum, is a valuable reference standard for Raman shift calibration and serves as a model for six-membered ring structures in complex chemical and biological systems. In this study, we measured polarized Raman spectra of gaseous cyclohexane at room temperature using cavity-enhanced Raman spectroscopy (CERS) across the range of 200-3200 cm-1. The observed vibrational wavenumbers, intensities, and depolarization ratios were compared with calculated values, enabling the assignment of several dozen Raman-active bands, including many overtone and combination bands. This work demonstrates the capability of CERS for vibrational analysis of gas-phase polyatomic molecules.
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