Photoionization spectra and ionization energies of HSCl, HSSSH, SSCl, and HSSCl formed in the reaction system Cl/Cl2/H2S

Jürg Eberhard, Wei Chen Chen, Chin Hui Yu, Yuan-Pern Lee, Bing Ming Cheng*

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Photoionization-efficiency (PIE) spectra in the wavelength range 110-140 nm were measured for products of the reaction system Cl/Cl2/H2S in a discharge-flow reactor coupled to a photoionization mass spectrometer employing a synchrotron as source of radiation. According to PIE spectra of HSCl, HSSSH, SSCl, and HSSCl, obtained for the first time, the ionization energies (IE) derived are (9.887±0.016), ≤9.09, (9.04±0.03), and (9.266±0.014) eV, respectively. Ab initio calculations of these IE with the GAUSSIAN-2 method agree well with experimental results. Other products observed in the system include S2, HSSH, S3, and SCl2. Their PIE spectra and IE were also measured; in some cases discrepancies with previous reports are found. The formation mechanism of the observed products is discussed.

Original languageEnglish
Pages (from-to)6197-6204
Number of pages8
JournalJournal of Chemical Physics
Volume108
Issue number15
DOIs
StatePublished - 15 Apr 1998

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