FLASH PHOTOLYSIS ABSORPTION SPECTROSCOPY OF THE RARE GAS HALIDES

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1977

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Ohio State University

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Kinetic spectroscopy of a flash-photolyzed mixture of Xe and $UF_{6}$ yielded the B-X transition (300--355 nm) of XeF in absorption. Vibrational assignments were made for 22 bands $(0 \leq v^{p}rime\ \leq 12, 0 \leq v^{\prime\prime} \leq 4)$, and confirmed by computer modeling of the relative absorption intensities. Constants for XeF(B-X) are: $T_{e} = 28 813.9 \pm 0.5 cm^{-1} \omega_{e}^{\prime} = 308.23 \pm 0.5 cm^{-1} x_{e}\omega_{e} = 1.4266 \pm 0.03 cm^{-1} \omega_{e}^{\prime} = 225.06 \pm 1.4 cm^{-1} x_{e}\omega_{e}^{\prime} = 10.568 \pm 0.4 cm^{-1}, and \Delta R_{e} = R_{e}^{\prime} - R_{e}^{\prime} = 0.35 \pm 0.02 \ {\AA}$. Studies of other rare gas halides by both flash photolysis and by tunable laser fluorescence spectroscopy will be discussed.

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Author Institution: Department of Chemistry, Drexel University

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