High-resolution infrared analysis of the ν7 band of cis-ethylene-d2 (cis-C2H2D2)

A global view of isotopic effects on ro-vibrational spectra of six-atomic molecules: a case study of eleven ethylene species

“…The Fourier transform infrared (FTIR) spectrometers permitted to record high-resolution spectra (with the uncertainty going up to 0.00096 cm −1 ) for many ethylene isotopic species (see Refs. [34][35][36][37][38][39][40][41][42][43] ). Because systematic "line-by-line" assignments remain quite tedious, the spectra of the minor ethylene isotopologues are much less studied than those of 12 C 2 H 4 .…”

High-resolution FTIR spectroscopy of ethylene-d3 (C2HD3): Rovibrational constants for the ground state and the v8=1 state

“…The same non-linear least-squares program which was used by Tan and Lebron in the previous study [4], as well as on the  6 band of C 2 H 3 D [11] and the  7 band of cis-C 2 H 2 D 2 [12], was employed to fit the assigned transitions of the  8 band of C 2 HD 3 . This program, used for fitting asymmetric rotor spectra, was developed by A.…”

Improved rovibrational constants for the ν12 band of C2H3D

“…Quite recently, we reported the results of our infrared work on the m 12 band of 13 C 12 CH 4 [1], the m 7 band of cis-C 2 H 2 D 2 [2], and the m 3 and m 6 bands of C 2 H 3 D in separate single-state analyses [3,4]. As part of our ongoing infrared investigation on ethylene, specifically on the isopotomer C 2 H 3 D, we report in this note the results of the analysis we did on the m 12 band of C 2 H 3 D. In addition to the improved overall accuracy of the rovibrational constants, more higher-order upper state constants were derived in this analysis.…”