Time-resolved resonance Raman study of the spectroscopy and kinetics of the Cl2 - radical anion in aqueous solution

Anthony J Hynes, P. H. Wine

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The resonance Raman spectrum of the chlorine molecular anion Cl 2 - has been obtained using pulsed laser photolysis as a radical production method. The fundamental and nine overtone transitions are observed. Analysis of the vibrational progression gives the vibrational constants ωe = 277.0 ±0.3 cm-1 and ωeχe = 1.83 ±0.05 cm-1; these constants give an upper limit dissociation energy of 1.3 ± 0.1 eV (all errors are 1σ). Time-resolved resonance Raman spectroscopy has been employed to study the kinetics of Cl2 - disproportionation. A disproportionation rate coefficient of (11 ±7) × 109 M-1 s-1 is obtained where the reported error includes 1σ precision and estimates of systematic errors. A resonance Raman detection limit for Cl2 - of 5 × 10-6 M has been obtained.

Original languageEnglish (US)
Pages (from-to)3565-3572
Number of pages8
JournalThe Journal of Chemical Physics
Volume89
Issue number6
StatePublished - 1988
Externally publishedYes

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Anions
Spectroscopy
anions
aqueous solutions
Kinetics
kinetics
spectroscopy
production engineering
Systematic errors
Chlorine
Photolysis
Pulsed lasers
progressions
systematic errors
chlorine
photolysis
Raman spectroscopy
Raman scattering
pulsed lasers
dissociation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Time-resolved resonance Raman study of the spectroscopy and kinetics of the Cl2 - radical anion in aqueous solution. / Hynes, Anthony J; Wine, P. H.

In: The Journal of Chemical Physics, Vol. 89, No. 6, 1988, p. 3565-3572.

Research output: Contribution to journalArticle

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