High-resolution IR spectrum of AsH2D: Ro-vibrational analysis of the bending triad bands , , and

High-resolution infrared study of AsH2D: The stretching fundamental bands ν1/ν5 and ν2

“…In accordance with the selection rules (see also [2]), the bands m 1 and m 2 are hybrid bands, and a-and c-type subbands may occur in their infrared spectra. However, we observed only a-type transitions in the m 1 band, and only c-type transitions in the m 2 band.…”

“…For details we refer to Refs. [1,2] rather than repeating the discussion given previously. In the next step we now proceed to the stretching states and report here on the study of the As-H stretching bands m 1 and m 5 at 2119 and 2126 cm À1 and the As-D stretching band m 2 at 1530 cm À1 of the AsH 2 D isotopic species.…”

“…[2]. High-resolution infrared spectra were recorded in Wuppertal employing a Bruker 120HR interferometer.…”

“…In two preceding contributions we reported on high-resolution Fourier transform infrared spectra of AsHD 2 and AsH 2 D in the region of the bending triads m 3 /m 4 /m 6 [1,2]. We have outlined in particular which kind and amount of additional information on the electronic ground state energy surface is provided by the mixed isotopic varieties of AsH 3 and AsD 3 .…”

“…In the next step we now proceed to the stretching states and report here on the study of the As-H stretching bands m 1 and m 5 at 2119 and 2126 cm À1 and the As-D stretching band m 2 at 1530 cm À1 of the AsH 2 D isotopic species. In Sections 2 and 3 we briefly give some experimental details and recall the properties of the Hamiltonian model, which was discussed in greater detail in a previous contribution [2]. Section 4 outlines the assignment of the spectra and the redetermination of the ground state parameters while Section 5 presents upper state energies and the results of the data fit.…”