Photodissociation Dynamics of Iodoform in Solution.
Wall, Magnus LU ; Tarnovsky, Alexander LU ; Pascher, Torbjörn LU ; Sundström, Villy LU and Åkesson, Eva LU
(2003)
In The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
107(2).
p.211-217
- Abstract
- The photodissociation dynamics of iodoform (CHI3) in acetonitrile and cyclohexane were investigated by femtosecond pump-probe spectroscopy and nanosecond laser flash photolysis. We have measured transient absorption spectra in the spectral region of 370-730 nm and kinetics at selected wavelengths on a femtosecond-microsecond time scale. We assign the observed photoproduct with absorption maxima at 450 and 600 nm, formed upon excitation of iodoform at 350 nm in acetonitrile and cyclohexane, to the isomer of iodoform, iso-iodoform (CHI2-I). The iso-iodoform is most probably formed via an in-cage recombination of the produced photofragments, the I atom and the CHI2 radical, with an ~7 ps time constant. The lifetime of the iso-iodoform is... (More)
- The photodissociation dynamics of iodoform (CHI3) in acetonitrile and cyclohexane were investigated by femtosecond pump-probe spectroscopy and nanosecond laser flash photolysis. We have measured transient absorption spectra in the spectral region of 370-730 nm and kinetics at selected wavelengths on a femtosecond-microsecond time scale. We assign the observed photoproduct with absorption maxima at 450 and 600 nm, formed upon excitation of iodoform at 350 nm in acetonitrile and cyclohexane, to the isomer of iodoform, iso-iodoform (CHI2-I). The iso-iodoform is most probably formed via an in-cage recombination of the produced photofragments, the I atom and the CHI2 radical, with an ~7 ps time constant. The lifetime of the iso-iodoform is found to be ~1.8 and 0.2 s in cyclohexane and acetonitrile, respectively. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/128228
- author
- Wall, Magnus
LU
; Tarnovsky, Alexander
LU
; Pascher, Torbjörn
LU
; Sundström, Villy
LU
and Åkesson, Eva
LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
- volume
- 107
- issue
- 2
- pages
- 211 - 217
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000180410500001
- scopus:0037448472
- ISSN
- 1520-5215
- DOI
- 10.1021/jp0213856
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 17af0491-5886-4a09-ad5f-6934f32f23c1 (old id 128228)
- date added to LUP
- 2016-04-01 17:09:32
- date last changed
- 2023-01-05 05:35:20
@article{17af0491-5886-4a09-ad5f-6934f32f23c1,
abstract = {{The photodissociation dynamics of iodoform (CHI3) in acetonitrile and cyclohexane were investigated by femtosecond pump-probe spectroscopy and nanosecond laser flash photolysis. We have measured transient absorption spectra in the spectral region of 370-730 nm and kinetics at selected wavelengths on a femtosecond-microsecond time scale. We assign the observed photoproduct with absorption maxima at 450 and 600 nm, formed upon excitation of iodoform at 350 nm in acetonitrile and cyclohexane, to the isomer of iodoform, iso-iodoform (CHI2-I). The iso-iodoform is most probably formed via an in-cage recombination of the produced photofragments, the I atom and the CHI2 radical, with an ~7 ps time constant. The lifetime of the iso-iodoform is found to be ~1.8 and 0.2 s in cyclohexane and acetonitrile, respectively.}},
author = {{Wall, Magnus and Tarnovsky, Alexander and Pascher, Torbjörn and Sundström, Villy and Åkesson, Eva}},
issn = {{1520-5215}},
language = {{eng}},
number = {{2}},
pages = {{211--217}},
publisher = {{The American Chemical Society (ACS)}},
series = {{The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory}},
title = {{Photodissociation Dynamics of Iodoform in Solution.}},
url = {{http://dx.doi.org/10.1021/jp0213856}},
doi = {{10.1021/jp0213856}},
volume = {{107}},
year = {{2003}},
}