Improved rovibrational constants for the v6 + v10 band of ethylene (12C2H4) by high-resolution Fourier transform infrared spectroscopy

Authors

Gissela B. Lebron, De La Salle University, Manila
T. L. Tan, Nanyang Technological University

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Journal of Molecular Spectroscopy

Volume

283

First Page

29

Last Page

31

Publication Date

2013

Abstract

Fourier transform infrared absorption spectrum of the ν₆+ν₁₀ combination band of ¹²C₂H₄ in the 1985-2100cm^-1 region was measured at an unapodized resolution of 0.0063cm^-1. The A-type ν₆+ν₁₀ band is centered at 2047.75817+/-0.00006cm^-1. The rovibrational analysis performed on the band using a standard Watson's A-reduced Hamiltonian model in I^r representation yielded the most accurate set of v₆+v₁₀=1 state constants to date. Upper-state parameters inclusive of three rotational, five quartic and two sextic terms were derived from a total of 527 infrared transitions assigned and included in the final fit. The rms deviation of the fit was 0.000625cm^-1.

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Recommended Citation

Lebron, G. B., & Tan, T. L. (2013). Improved rovibrational constants for the v6 + v10 band of ethylene (12C2H4) by high-resolution Fourier transform infrared spectroscopy. Journal of Molecular Spectroscopy, 283, 29-31. Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/5783

Disciplines

Physics

Keywords

Ethylene; Fourier transform infrared spectroscopy

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