DISPERSED FLUORESCENCE SPECTROSCOPY OF JET-COOLED ISOBUTOXY, 2-METHYL-1-BUTOXY, AND ISOPENTOXY RADICALS

Reza, Md Asmaul

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Description

Title

DISPERSED FLUORESCENCE SPECTROSCOPY OF JET-COOLED ISOBUTOXY, 2-METHYL-1-BUTOXY, AND ISOPENTOXY RADICALS

Author(s)

Reza, Md Asmaul

Contributor(s)

• Liu, Jinjun
• Mason, Amy
• Alam, Jahangir
• Reilly, Neil J

Issue Date

26-Jun-15

Keyword(s)

Atmospheric science

Abstract

It is well known that rate constants of certain reactions of alkoxy radicals, e.g., unimolecular dissociation (decomposition by C-C bond fission) and isomerization via 1,5 H-shift, are highly sensitive to the molecular structure. In the present and the next talks, we report dispersed fluorescence (DF) spectra of various alkoxy radicals obtained under supersonic jet-cooled conditions by pumping different vibronic bands of their $tilde B leftarrow tilde X$ laser induced fluorescence (LIF) excitation spectra.footnote{Wu, Q.; Liang, G.; Zu, L.; Fang, W. emph{J. Phys. Chem A} textbf{2012}, emph{116}, 3156-3162.}$^,$footnote{Lin, J.; Wu, Q.; Liang, G.; Zu, L.; Fang, emph{W. RSC Adv.} textbf{2012}, emph{2}, 583-589.}$^,$footnote{ Liang, G.; Liu , C.; Hao, H.; Zu, L.; Fang, W. emph{J. Phys. Chem. A} textbf{2013}, emph{117}, 13229- 13235.} This talk focuses on the DF spectra of 2-methyl-1-propoxy (isobutoxy), 2-methyl-1-butoxy, and 3-methyl-1-butoxy (isopentoxy). In all cases, strong CO-stretch progressions were observed, as well as transitions to other vibrational levels, including low-frequency ones. Quantum chemical calculations were carried out to aid the assignment of the DF spectra. Franck-Condon factors were calculated using the ezSpectrum program.footnote{V. Mozhayskiy and A. I. Krylov, http://iopenshell.usc.edu/}

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

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