Abstract
Absorption spectra of ClO, BrO, and IO and the emission spectrum of IO have been observed from argon matrix samples prepared by microwave discharging the reagent mixture before condensation. Vibronic progressions were observed for each system. The spectroscopic scopic constants T e, ω′ e, ω e x′ e, ω″ e, and ω e x″ e were evaluated from the absorption and emission data for comparison with gas-phase constants. Very good agreement is found for ClO. The argon matrix observations dictate a revision of the gas-phase vibronic assignments for BrO. The ground-state vibrational fundamental and T e for argon matrix isolated IO are similar to the gas-phase values, but a lower excited-state spacing is found in the matrix.
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