NOBLE-GAS HALIDES - B-]X AND D-]X SYSTEMS OF XE-136CL-35

The B → X (2870-3100 Å) and D → X (2250-2370 Å) band systems of 136Xe35Cl are photographed and vibrationally analyzed. A simultaneous least-squares fit of 41 band-heads in the B-X system and 35 in D-X yields, in part, the following constants (in cm-1): TeB = 32 405.8, TeD = 42 347.9, ωeB = 194.75, ωeD = 204.34, ωeX = 26.22. The ground state dissociation energy (D″e) is estimated to be 281 ± 10 cm-1. Potential curves are derived for all three states through Franck-Condon calculations. From these curves the D-state internuclear distance is 0.09 ± .02 Å smaller than the B-state distance. © 1979.