Rovibrationally resolved, Fourier-transform near infrared spectroscopy of the ν1 and ν2 vibrations of the HCl dimer in a supersonic jet.

Autor: Meads, Roger F., McIntosh, Avery L., Arnó, Josep I., Hartz, Christopher L., Lucchese, Robert R., Bevan, John W.
Předmět:
Zdroj: Journal of Chemical Physics; 9/15/1994, Vol. 101 Issue 6, p4593, 6p
Abstrakt: We have recorded the high-resolution (0.007 cm-1) Fourier-transform near infrared absorption spectrum of the symmetric 35Cl–35Cl, and the mixed 35Cl–37Cl isotopomers of the hydrogen chloride dimer in a supersonic jet. The spectrum was recorded under a low effective rotational temperature (≊20 K). Rovibrational analysis of the observed spectra has been performed for the K‘a=0 subbands of the ν+1 and ν-1 perpendicular-type bands centered at 2890 and 2879 cm-1, respectively. The K‘a=0 and 1 parallel-type subbands of the ν-2 at 2839 cm-1 and ν+2 at 2857 cm-1 have also been analyzed. Furthermore, we have observed and investigated the (H 35Cl)2ν+1, K‘a=1, ΔK=-1 rovibrational transition centered near 2869 cm-1. The results are compared with spectra previously recorded using difference frequency tunable laser spectrometers both in a supersonic slit jet and in an equilibrium gas phase mixture to demonstrate the advantages and limitations of the FTIR technique. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index