| Abstrakt: |
The main goal of the present study was to improve the already published rotational structure analysis of the ground vibrational state of the13CH3D molecule. To realise that, we recorded high-resolution spectra of a set of the strongly interacting vibrational bands, 2ν3(A1), 2ν6(A1), 2ν6(E), ν2(A1), ν5+ ν6(A1), ν5+ ν6(A2), ν5+ ν6(E) and ν3+ ν6(E). From the analysis of the experimental data, more than 1900 ground state combination differences (GSCD) were determined with,and. Thea1/a2splittings of the states with quantum numberK= 3 were taken into account. The presence of numerous forbidden transitions allowed us to determine with high accuracy GSCD not only with ΔK= 0, but with ΔK= ±1, ±2 and ±3, as well. Spectroscopic parameters of the ground vibrational state were determined from the joint fit of the obtained GSCD (they are reproduced withcm−1). The 21 highly accurate THz-region transitions which were also used as input data, are reproduced withkHz. [ABSTRACT FROM AUTHOR] |
