Analysis of the Fourier transform infrared spectrum of the stannane species 116SnH4 in the region 1270-1600 cm-1

Tabyaoui, A.; Pierre, G.; Bürger, H.
January 2005
European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jan2005, Vol. 32 Issue 1, p51
Academic Journal
Monoisotopic stannane 116SnH4 has been investigated at room temperature in the 600-850 cm-1 and 1270-1600 cm-1 regions by FTIR spectroscopy with an effective resolution of 2.1 ×10-3 cm-1 and 2.0 ×10-3 cm-1 respectively. The simultaneous analysis of infrared transitions of both the bending triad and the hot band {bending triad} minus {bending dyad}, enabled us to determine 26 parameters for the (2?2) band and the combination band (?2+?4). The standard deviation of the fit was about 1.5×10-3 cm-1. In this analysis, we have used, for the bending triad, a Hamiltonian developed to the fourth order of approximation. 163 observed transitions for the hot band and most observed transitions for the bending triad spectrum, were assigned to the two bands 2?2 and (?2+?4), up to J=9. In the fit of the Hamiltonian parameters, we have used for the ground state and for the fundamentals ?2 and ?4, the parameters determined by Brunet, Pierre, and Bürger [J. Mol. Spectrosc.140, 237 (1990)].


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