Abstract
The degenerate combination levels of E symmetry v3=v4=1 (1900.21cm−1) and v3=2, v6=1 (1889.30cm−1) were investigated for the first time with high-resolution, using a Fourier-transform infrared spectrum recorded in the 1600–2000cm−1 region, at a resolution of 0.0024cm−1. These combination levels strongly interact through a Fermi-type anharmonic coupling, which plays an essential role in the studied system. Besides the Fermi-interaction, the other important Coriolis (Δk=±1, Δl=∓2) and higher-order (Δk=Δl=±2) inter-vibrational interactions were also considered, in a similar manner as in the lower ν3+ν6/ν4 dyad [P. Pracna et al., J. Mol. Spectrosc. 259 (2010) 1–10]. The fitted wavenumbers of the rovibrational transitions of the ν3+ν4 and 2ν3+ν6 bands provide a set of molecular parameters which ensure an accurate reproduction of the spectrum. Moreover, these molecular parameters show good agreement with those of the lower system ν3+ν6/ν4.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
