Abstract：Fermi resonance is a very common phenomenon in molecule vibration spectra, especially in polyatomic molecule with complex structure. Fermi resonance appears when a fundamental vibration frequency lies closely to an overtone or combination frequencies. One can observe two peaks coming from Fermi resonance and the energy transfer also occurs between the two peaks. Fermi resonance phenomenon appears in both infrared spectrum and Raman spectrum. The Raman spectrum of CCl4 was measured. The frequency separation between the two peaks in a Fermi resonance doublet was observed and the integrated intensities were calculated with the software of OriginPro7.5. Fermi resonance interaction was caused by the CCl4 C-Cl f-symmetrical stretching fundamental ν03coupling. The combination frequency(ν1+ν4)of C-Cl a1-symmetrical stretching ν1 and band C-Cl2f-symmetrical bending ν4 was calculated. Based on Bertran’s theory, Fermi coupling coefficient W was calculated and the theoretical value ν03of ν3 was estimated. The present article provided good reference for better understanding of the relationship between molecular vibration frequency and molecular structure.
高淑琴,贺家宁,李荣福,左剑,李兆凯,黄保坤,里佐威. 四氯化碳费米共振的拉曼光谱研究[J]. 光谱学与光谱分析, 2007, 27(10): 2042-2044.
GAO Shu-qin, HE Jia-ning, LI Rong-fu, ZUO Jian, LI Zhao-kai, HUANG Bao-kun, LI Zuo-wei. Study of the Raman Spectrum of CCl4 Fermi Resonance. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 2042-2044.
