Analysis of the hot band of stannane 116SnH4 in the 600-850 cm-1 range

Article abstract of DOI:10.1140/epjd/e2003-00283-5

The FTIR spectrum of monoisotopic stannane ¹¹⁶SnH₄ has been recorded in the 600-850 cm^-1range, with the Bruker 120 HR interferometer at Giessen, Germany. The resolution was 2.1 × 10 ^-3 cm^1-. The analysis of infrared transitions in this region enabled Brunet et al. to assign many lines to the bending dyad ν ₂/ν₄,. However, several lines in this spectrum were found to be unassigned. In a recent work, we have analysed the infrared spectrum of stannane in the bending triad region at 1400 cm^-1. The results obtained enabled us to assign directly, for the spectrum in the region 600-850 cm^-1, 163 of the observed transitions to the hot band {bending triad} minus {bending dyad} up to J = 9. These transitions were combined to the infrared data corresponding to the bending triad (2ν ₂, ν₂ + ν₄, 2ν₄), to refine a set of Hamiltonian parameters for the two bands 2ν₂ and (ν₂ + ν₄).