Gas-phase Raman spectra of hot bands of fundamentals and combinations associated with the torsional vibration of s-trans-1,3-butadiene and its deuterated isotopologues |
| |
Authors: | Praveenkumar Boopalachandran Jaan Laane |
| |
Affiliation: | a Department of Chemistry, Texas A&M University, College Station, TX 77843-3255, United States b Department of Chemistry & Biochemistry, Oberlin College, Oberlin, OH 44074, United States |
| |
Abstract: | The gas-phase Raman spectra of 1,3-butadiene and its 2,3-d2, 1,1,4,4-d4, and d6 isotopologues have been recorded with high sensitivity and resolution of 0.7 cm−1. Hot band series of fundamentals and combinations involving the ν13 torsional vibration of the s-trans rotamer have been observed for each of the isotopologues. Modes studied were ν10 (C H wag), ν12 (CH2 twist), ν10 + ν12, ν15 (CH2 wag) + ν16 (CH2 twist), and ν23 (CH2 rock) + ν24 (C C C deformation). The spacings of the quantum states of the torsional contribution were found to decrease with additional excitation of this mode (ν13) in the upper vibrational states except for the ν23 + ν24 combination state. |
| |
Keywords: | 1,3-Butadiene Gas-phase Raman spectra Combination bands Hot bands Internal rotation |
本文献已被 ScienceDirect 等数据库收录! |
|