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
• Norman C. Craig, Oberlin College
• Jaan Laane

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 v₁₃ torsional vibration of the s-trans rotamer have been observed for each of the isotopologues. Modes studied were v₁₀ (C-H wag), v₁₂ (CH₂ twist), v₁₀ + v₁₂, v₁₅ (CH₂ wag) + v₁₆ (CH₂ twist), and v₂₃ (CH₂ rock) + v₂₄ (C=C-C deformation). The spacings of the quantum states of the torsional contribution were found to decrease with additional excitation of this mode ( v₁₃) in the upper vibrational states except for the v₂₃ + v₂₄ combination state.

Repository Citation

Boopalachandran, Praveenkumar, Norman C. Craig, and Jaan Laane. 2011. "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." Journal Of Molecular Spectroscopy 269(2): 236-241.

Publisher

Elsevier

Publication Date

10-1-2011

Publication Title

Journal of Molecular Spectroscopy

Department

Chemistry and Biochemistry

Document Type

Article

DOI

https://dx.doi.org/10.1016/j.jms.2011.07.009

Language

English

Format

text