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High resolution photoabsorption spectrum of hexafluoro-1,3-butadiene (1,3-C 4F 6) as studied by vacuum ultraviolet (VUV) synchrotron radiation

Ferreira Da Silva, F., Almeida, D., Vasekova, E., Drage, E., Mason, N.J., Limão-Vieira, P. (2012) High resolution photoabsorption spectrum of hexafluoro-1,3-butadiene (1,3-C 4F 6) as studied by vacuum ultraviolet (VUV) synchrotron radiation. Chemical Physics Letters, 550 . pp. 62-66. ISSN 0009-2614. (doi:10.1016/j.cplett.2012.08.075) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1016/j.cplett.2012.08.075

Abstract

In this Letter we present a high resolution VUV photoabsorption spectrum of hexafluoro-1,3-butadiene (1,3-C 4F 6), over the wavelength range 113-247 nm (11.0-5.0 eV). The spectrum reveals several new features not previously reported in the literature. The assignment of the observed valence and Rydberg transitions and the associated vibronic series is presented based on our recent ab initio calculations on the vertical excitation energies of C 4F 6 isomers. The dominant excitation has been assigned to the υ 1′(a) CC stretching mode in the (5 1A ← 1 1A, 3p a ← π a(20a)) and (7 1A ← 1 1A, 3p b ← π b(19b) ) transitions, with mean energies of 0.201 and 0.188 eV, respectively. The measured absolute photoabsorption cross section has been used to calculate the photolysis lifetime of 1,3-C 4F 6 in the upper stratosphere (20-50 km).

Item Type: Article
DOI/Identification number: 10.1016/j.cplett.2012.08.075
Uncontrolled keywords: Ab initio calculations, High resolution, Mean energy, Photoabsorption cross sections, Photoabsorption spectra, Rydberg transitions, Stretching modes, Vacuum ultraviolets, Vertical excitation energy, Wavelength ranges, Butadiene, Isomers, Photolysis, Radiation
Subjects: Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Nigel Mason
Date Deposited: 16 Jul 2019 13:25 UTC
Last Modified: 17 Jul 2019 10:17 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/74729 (The current URI for this page, for reference purposes)
Mason, N.J.: https://orcid.org/0000-0002-4468-8324
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