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Ultrafast study of the photodissociation of bromoiodomethane in acetonitrile upon 266 nm excitation

Tarnovsky, Alexander LU ; Wall, Magnus LU ; Gustafsson, M; Lascoux, Noelle LU ; Sundström, Villy LU and Åkesson, Eva LU (2002) In The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory 106(25). p.5999-6005
Abstract
We studied the A-band photodissociation of bromoiodomethane, CH2BrI, in acetonitrile solution at room temperature by femtosecond pump-probe spectroscopy, Initiated by the 266 nm light, this reaction leads to the CH2Br-I isomer, most likely produced via in-cage recombination of the CH,Br and I photofragments. The isomer is formed vibrationally excited with a time constant of similar to7.5 ps and the hottest isomer molecules are observed as early as I ps after the UV excitation, Vibrational relaxation of the isomer molecules takes place on two distinct time scales of a few and similar to40 ps. The ground-state lifetime of the isomer is about 2.5 ns.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
volume
106
issue
25
pages
5999 - 6005
publisher
The American Chemical Society
external identifiers
  • wos:000176356400005
  • scopus:0037183059
ISSN
1520-5215
DOI
10.1021/jp014306j
language
English
LU publication?
yes
id
4df757cf-5580-4d1c-9e13-6fb75f185016 (old id 334779)
date added to LUP
2007-11-15 13:43:02
date last changed
2017-07-02 04:18:47
@article{4df757cf-5580-4d1c-9e13-6fb75f185016,
  abstract     = {We studied the A-band photodissociation of bromoiodomethane, CH2BrI, in acetonitrile solution at room temperature by femtosecond pump-probe spectroscopy, Initiated by the 266 nm light, this reaction leads to the CH2Br-I isomer, most likely produced via in-cage recombination of the CH,Br and I photofragments. The isomer is formed vibrationally excited with a time constant of similar to7.5 ps and the hottest isomer molecules are observed as early as I ps after the UV excitation, Vibrational relaxation of the isomer molecules takes place on two distinct time scales of a few and similar to40 ps. The ground-state lifetime of the isomer is about 2.5 ns.},
  author       = {Tarnovsky, Alexander and Wall, Magnus and Gustafsson, M and Lascoux, Noelle and Sundström, Villy and Åkesson, Eva},
  issn         = {1520-5215},
  language     = {eng},
  number       = {25},
  pages        = {5999--6005},
  publisher    = {The American Chemical Society},
  series       = {The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory},
  title        = {Ultrafast study of the photodissociation of bromoiodomethane in acetonitrile upon 266 nm excitation},
  url          = {http://dx.doi.org/10.1021/jp014306j},
  volume       = {106},
  year         = {2002},
}