Matrix reactions of oxygen atoms with H2S molecules

R. R. Smardzewski*, Ming-Chang Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


Ultraviolet and laser photolysis of dilute argon matrix samples containing O3 and H2S molecules at 8°K produced new infrared absorptions at 3425.0, 1177.0, 763.0, and 444.8 cm-1 which were assigned to the previously unobserved HSOH intermediate species, hydrogen thioperoxide. The HSOH molecule is believed to be formed by the following reaction in the argon matrix cage; {O+H2S→[H2S=O] →HSO+H→HSOH}cage. Extensive 18O and deuterium isotopic studies had shown this species to contain one oxygen atom and two nonequivalent hydrogen atoms, while the observation of the S-O stretching vibration at 763.0 cm-1 had confirmed the presence of a sulfur-oxygen single bond. The intense blue-violet chemiluminescence which appeared when the photolyzed matrix samples were warmed to 20°K was subsequently identified as SO2 phosphorescence (3B11A1). Fluorescence from 1B11A1 was not observed.

Original languageEnglish
Pages (from-to)3197-3204
Number of pages8
JournalThe Journal of chemical physics
Issue number7
StatePublished - 1 Dec 1976


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