Journal of Chemical Physics p. 5949 - 5953 (1991)
Update date:2022-08-11
Topics:
Gosnell, T. R.
Taylor, A. J.
Lyman, J. L.
Ultrafast time-resolved absorption spectroscopy in the hard ultraviolet has been used to investigate the photodissociation of gas-phase CF2Br2 photolyzed at 248 nm.The broadband spectra obtained in the 250-265 nm region have shown that absorption of a single photon activates a two-step sequential elimination of the molecule's two bromine atoms, leaving the product CF2 radical in the ground or first-excited vibrational state of its ν2 bending mode.The spectra also demonstrate the direct detection of the vibrationally hot CF2Br intermediate species itself.We interpret the <*>6 ps time scale over which the diffuse CF2Br spectrum evoles as evidence for slow intramolecular vibrational redistribution within this molecule.
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