Infrared laser photodetachment of electrons from vibrationally excited allyl anions
- Creators
- Wight, Charles A.
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Beauchamp, J. L.
Abstract
Infrared laser photodetachment of allyl anions has been investigated using the techniques of ion cyclotron resonance (ICR) spectroscopy. Facile detachment of vibrationally excited anions occurs with a phenomenologically defined cross section, σ* = (6.5 ± 2) X 10^(-20) cm^2 at 945 cm^(-1), using a low-power CW CO_2 laser. The detachment yield decreases with increasing photon energy in the range 900-1100 cm^(-1). Photodetachment from vibrationally relaxed anions also occurs but with a much lower cross section, σ = (6.3 ± 3) X 10^(-23) cm^2. When fluoride ion reacts with allyltrimethylsilane, about 30% of the nascent allyl anions are vibrationally excited. The predominant relaxation mechanism below 10^(-6) torr is radiative emission with a measured rate constant of 53 ± 10 s^(-1).
Additional Information
© 1984 American Chemical Society. Received: November 4, 1983; In Final Form: March 13, 1984. We thank the reviewer for helpful comments and Dr. B. S. Ault for providing the sample of NF_3. This work is supported in part by the President's Fund of the California Institute of Technology and by the U.S. Department of Energy.Additional details
- Eprint ID
- 87522
- Resolver ID
- CaltechAUTHORS:20180702-131952256
- Caltech President's Fund
- Department of Energy (DOE)
- Created
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2018-07-03Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Arthur Amos Noyes Laboratory of Chemical Physics
- Other Numbering System Identifier
- 6554