INFRARED-SPECTROSCOPY OF HOCL IN THE 4000-10000-CM(-1) REGION

The vibration-rotation spectra of both Cl-35 and Cl-37 isotopomers of HOCl have been recorded in selected regions between 3900 and 10 500 cm(-1) More than 6000 transitions were assigned to the following overtone and combination bands: nu(1) + nu(3), nu(1) + nu(2), nu(1) + 2 nu(2), and 3 nu(1). A Watson-type Hamiltonian in the S reduction and T-r representation was adopted for the analysis, and the vibration-rotation parameters were derived for the excited states. Their values, together with spectroscopic parameters of the fundamental bands reported in the literature, allowed the calculation of a large set of anharmonicity constants and the vibrational dependence of the rotational constants. (C) 1994 Academic Press, Inc.