Vibration–rotation–torsion analysis of the high resolution infrared spectrum of C2H6 between 1330 and 1610cm−1: The ν6, ν8, ν4+ν12, 2ν4+ν9 interacting system and hot transitions from ν4 to ν4+ν8

The band of ethane: A global frequency analysis of data from the four lowest vibrational states

“…This band system has been observed in the atmosphere of Titan [3] and aside from a recent frequency analysis [21], which is based on an isolated band analysis model, there exists limited laboratory data on line parameters of ethane in this range. In a systematic study of this band system which will be based on the model Hamiltonian in this work, the interaction of m 6 with 6m 4 and m 9 þ 2m 4 will be considered.…”

The status of spectroscopic data for the exoplanet characterisation missions

“…Ethane has 8 atoms and a low energy vibrational mode, so the number of lines at elevated temperatures are likely to be unmanageable. Experimentally (room-temperature) only the region the infrared active fundamental transitions from the three main spectral regions, around 12 µm [30], 6.2 -7.5 µm [31], and 3.3 µm [32] are covered. The proposal will be therefore to provide temperature-dependent cross sections [33] for ethane; these should be available in due course.…”

Cyclohexane Vibrations: High-Resolution Spectra and Anharmonic Local Mode Calculations

“…The observed small ζ value of −0.0957 for ν 27 (e u ) is in reasonable agreement with the value of −0.044 calculated from Gaussian. The Coriolis coupling coefficient 30 (Table 2) between ν 27 and ν 14 has a value of −6.7 × 10 −3 cm −1 = √2(Bζ 27,14 )[(ν 27 /ν 14 ) 1/2 + (ν 14 /ν 27 ) 1/2 ]/2; solving gives ζ 27,14 = −0.033. This value compares to −0.032 calculated from Gaussian.…”