High-Resolution Spectroscopic Investigation of nu16 in trans-1,2-Dichloroethane
We report on the first detailed rovibrational analysis in 1,2-dichloroethane. It concerns the a-type nu16 absorption band of gaseous trans-1,2-dichloroethane at 1232 cm-1, which we have recorded using a Fourier transform interferometer, under room temperature and jet-cooled experimental conditions. The rotational analysis of the almost diatomic-like prominent R and P structures in nu16 is performed for trans-1,2-12C2H435Cl2 and trans-1,2-12C2H435Cl37Cl. The nuclear spin statistics is discussed for various isotopomers and isomers of 1,2-dichloroethane. The complex absorption pattern observed at the band center is tentatively assigned in terms of overlapping Q branches, arising from fundamental bands involving different isotopomers in natural abundance (with 35Cl and 37Cl), and from related hot bands involving the three lowest vibrational modes in the molecule, nu6, nu10, and nu18. Copyright 1997 Academic Press. Copyright 1997Academic Press
Youssoufi
YE
Laboratoire de Chimie Physique Moleculaire, CP 160/09, Universite Libre de Bruxelles, Ave. Roosevelt, 50, Brussels, B-1050, Belgium
Georges
R
Lievin
J
Herman
M