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High-resolution Fourier transform infrared spectrum of the v11 fundamental band of ethylene-13C (13C2H4)
Author
Kang, Leng Li
Supervisor
Tan, Augustine Tuck Lee
Abstract
The spectrum of the v11 fundamental band of ethylene-I3c2 (l3c2H4) was recorded with an unapodized resolution of 0.006 cm-' in the frequency range of 2910 to 3020 cm-' using the Fourier transform infrared (FTIR) spectroscopic technique. Rovibrational constants for the upper state (v11 = 1) up to five quartic and two sextic centrifugal distortion terms were derived for the first time by assigning and fitting a total of 583 infrared transitions using a Watson's A-reduced Hamiltonian in the P representation. The root-mean-square (rms) deviation of the fit of transitions of the A-type v11 band which is centered at 2969.601 695 f 0.000 099 cm-'. was 0.000 84 cm-'. The ground state rovibrational constants were improved by a fit of 1052 combination-differences from the present v11 infrared measurements and those of vl2, with arms deviation of 0.000 76 cm-'. Some transitions of the v11 band which were identified to be perturbed, possibly by the nearby v2 + v12 band, were not included in the final fit. A paper titled "High-Resolution FTIR Spectroscopic Analysis of the v11 Band of Ethylene-13c2" by T. L. Tan, L. L. Kang, K. L. Goh, P. P. Ong and H. H. Teo has been submitted recently to the "Journal of Molecular Spectroscopy", USA, for publication as a regular article.
Date Issued
2002
Call Number
QC454.F7 Kan
Date Submitted
2002