title: Vibration assignment of carbon-sulfur bond in 2-thione-1,3-dithiole-4,5-dithiolate derivatives.
abstract: The higher frequency peak near 1050 cm(-1) of the doublet in the infrared and Raman spectra of 2-thione-1,3-dithiole-4,5-dithiolate (DMIT) derivatives corresponds mainly to the stretching vibration of carbon-sulfur double bond in the terminal S=CS2 fragments of DMIT skeletons while the lower one corresponds mainly to the Fermi resonance peak between overtones of symmetric stretching vibration of two carbon-sulfur single bond in the S=CS2 fragment of DMIT skeletons and the higher frequency. On the other hand, the higher frequency near 500 cm(-1) corresponds mainly to the symmetric stretching vibration of two carbon-sulfur single bond in the S=CS2 fragments of DMIT skeletons while the lower one corresponds mainly to the symmetric stretching vibration of the four carbon-sulfur single bond in the S2C=CS2 fragments of DMIT skeletons.
authors.affiliation: State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China.
authors.forename: Guoqun
authors.initials: G
authors.lastname: Liu
authors.forename: Qi
authors.initials: Q
authors.lastname: Fang
authors.forename: Wen
authors.initials: W
authors.lastname: Xu
authors.forename: Hongyu
authors.initials: H
authors.lastname: Chen
authors.forename: Chunlei
authors.initials: C
authors.lastname: Wang
mesh_terms: D002244:Carbon / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*
chemical_list: D013438:Sulfhydryl Compounds; D013455:Sulfur; D002244:Carbon