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

Alexander Tarnovsky; Magnus Wall; M Gustafsson; Noelle Lascoux; Villy Sundström; Eva Åkesson

doi:10.1021/jp014306j

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

Alexander Tarnovsky, Magnus Wall, M Gustafsson, Noelle Lascoux, Villy Sundström, Eva Åkesson

Chemical Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	5999-6005
Journal	The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
Volume	106
Issue number	25
DOIs	https://doi.org/10.1021/jp014306j
Publication status	Published - 2002

Bibliographical note

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)

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1021/jp014306j

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title = "Ultrafast study of the photodissociation of bromoiodomethane in acetonitrile upon 266 nm excitation",

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 = "Alexander Tarnovsky and Magnus Wall and M Gustafsson and Noelle Lascoux and Villy Sundstr{\"o}m and Eva {\AA}kesson",

note = "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)",

year = "2002",

doi = "10.1021/jp014306j",

language = "English",

volume = "106",

pages = "5999--6005",

journal = "The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory",

issn = "1520-5215",

publisher = "The American Chemical Society (ACS)",

number = "25",

}

Ultrafast study of the photodissociation of bromoiodomethane in acetonitrile upon 266 nm excitation. / Tarnovsky, Alexander; Wall, Magnus; Gustafsson, M et al.
In: The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 106, No. 25, 2002, p. 5999-6005.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Ultrafast study of the photodissociation of bromoiodomethane in acetonitrile upon 266 nm excitation

AU - Tarnovsky, Alexander

AU - Wall, Magnus

AU - Gustafsson, M

AU - Lascoux, Noelle

AU - Sundström, Villy

AU - Åkesson, Eva

N1 - 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)

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

U2 - 10.1021/jp014306j

DO - 10.1021/jp014306j

M3 - Article

SN - 1520-5215

VL - 106

SP - 5999

EP - 6005

JO - The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

JF - The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

IS - 25

ER -

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

Abstract

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