High resolution analysis of GeH4 in the dyad region: Ro-vibration energy structure of 70GeH4 and line strengths of GeH4 (M = 70, 72, 73, 74, 76)

Line positions and intensities for the ν2/ν4 bands of 5 isotopologues of germane near 11.5 µm

“…We can compare these results with the recent work of Ulenikov et al [5] . For each isotopologue we have used around twice more assigned lines and higher J values by two or three units.…”

“…The introduction of our previous paper [3] presented a review of the different spectroscopic analyses conducted by other groups. Since that publication, we can additionally cite the very recent works of Ulenikov et al [5,6] about the analysis of this same bending dyad and of some hot bands in the 1100-1350 cm −1 region.…”

“…In Ref. [5] , Ulenikov et al have presented comparable results, but using a different reduction (fix parameters are not the same).…”

High-Resolution spectroscopy and analysis of the fundamental modes of 28SiF4. Accurate ex

“…Since we do not consider here absolute intensities for the ν 4 − ν 2 and ν 1 − ν 4 transitions and only approximate intensities for ν 2 −GS (and ν 1 -GS, see below), the dipole moment operator was expanded at the minimum order for these three transitions, that is 1. The ν 2 fundamental band of E symmetry is forbidden in first approximation but gains intensity through the coupling with other bands (presumably mainly ν 4 in this case, as for many other tetrahedral molecules like CH 4 [37], CF 4 [38], GeH 4 [39,40], RuO 4 [41], OsO 4 [42], etc. ).…”

Comprehensive study of the pentad bending triad region of germane: Positions, strengths, widths and shifts of lines in the 2ν2, ν2+Ulenikov1, Gromova2, Bekhtereva3 et al. 2021Journal of Quantitative Spectroscopy and Radiative TransferSelf Cite6000View full textAdd to dashboardCite

“…As the first step of the present analysis, we performed an assignment of transitions of the 70 GeH 4 , 72 GeH 4 and 74 GeH 4 species in the studied spectra. For the convenience of the reader two overview spectra I and IIa which have been recorded under different experimental conditions, are shown in the upper traces of Figs.1 and 2.For illustration of the quality of the recorded spectra, small parts of the high resolution spectrum IIa (for the stronger ν 2 + ν 4 band) and I (for the weaker 2ν 2 and 2ν 4 bands) are shown in Figs.3 -6where clusters belonging to different isotopic species are marked.For the assignment of transitions, the ground state parameters from Ref [37]. were used.…”