Study of Fermi Resonance Characteristic of CS2 in THF
LI Shuai-peng1,2, LIN Xiao-long2, ZHANG Feng-qin2, JIANG Yong-heng1,2*, SUN Yu3, LI Si-yuan3, ZHU Dong-you3, LIU Meng-hui3
1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China 2. College of Physics, Jilin University, Changchun 130023, China 3. College of Automotive Engineering, Jilin University, Changchun 130022, China
Abstract：In the present paper, an innovative experiment was done. The authors measured the Raman spectra of CS2 mixed with THF at different volume fractions. According to the J. F. Bertran theory, we analyzed the changing regularity of ν1-2ν2 Fermi resonance along with the different concentration. It was shown that the characteristic parameters of Fermi resonance in solution, such as spectra intensity, frequency space, coupling coefficient and anharmonic constant, will make changes along with solution concentration variation. Because of the existing of solvent effects, the spectra intensity decreases gradually, and the coupling coefficient increases gradually. The explanation of such changes is that the vibration spectra are affected not only by scattering coefficient, but also by more weak hydrogen bonds formation. In addition, the asymmetric frequency shift of the Raman spectra was also found in the paper. The fundamental frequency ν1 basically has no shifts, but the overtone frequency 2ν2 moves towards the high wave number gradually, which is inconsistent with the theory of symmetrical movement. According to the study of molecular microcosmic action, the formation and mechanism of the weak hydrogen bond can preferably explain the above phenomenon. The research has a major influence on the further study of solvent effects in Fermi resonance. And the paper will also provide certain reference value for the study of molecule vibration spectra in solution.
Key words：Fermi resonance;Raman spectrum;Solvent effect;Weak hydrogen bond
李帅鹏1,2，林晓珑2，张凤琴2，姜永恒1,2*，孙 宇3，李思缘3，朱东友3，刘孟辉3 . 二硫化碳在四氢呋喃中的费米共振特性研究 [J]. 光谱学与光谱分析, 2014, 34(04): 894-897.
LI Shuai-peng1,2, LIN Xiao-long2, ZHANG Feng-qin2, JIANG Yong-heng1,2*, SUN Yu3, LI Si-yuan3, ZHU Dong-you3, LIU Meng-hui3. Study of Fermi Resonance Characteristic of CS2 in THF . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(04): 894-897.
[1] Fermi E. Phys., 1931, 71: 250. [2] Barnes G L, Sibert E L. Journal of Molecular Spectroscopy, 2008, 249(2): 78. [3] Stride J A, Dallin P H, Jayasooriya U A. J. Chem. Phys., 2003, 119(5): 2747. [4] Aoki K, Yamawaki H, Sakashita M. Science, 1995, 268(5215): 1322. [5] Olbert-Majkut A, Ahokas J, Lundell J, et al. Chemical Physics Letters, 2009, 468: 176. [6] Deng M L, Zhu W Q. Physical Review E, 2008, 77(6): 061114. [7] Gladrov S M, Karimov M G, Koroteev N I. JETP Letter, 1982, 35(9): 470. [8] Gao X L, Butler I S, Kremer R. Spectrochimica Acta Part A., 2005, 61: 27. [9] CHEN Yong, ZHOU Yao-qi, NI Pei(陈 勇，周瑶琪，倪 培). Rock and Mineral Analysis(岩矿测试), 2006, 25(3): 211. [10] Bertran J F, Ballester L,Dobrihalova L, et al. Spectrochimica Acta, 1968, 24A: 1765. [11] CAO Biao, ZUO Jian, LI Zuo-wei, et al(曹 彪，左 剑，里佐威，等). Acta Physica Sinica(物理学报)，2009, 58(5): 3538. [12] Li Dongfei, Sun Shang, Sun Chenglin, et al. Spectrochimica Acta, 2012, 96: 193.
