Abstract
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 (3B1→ 1A1). Fluorescence from 1B1→ 1A1 was not observed.
Original language | English |
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Pages (from-to) | 3197-3204 |
Number of pages | 8 |
Journal | The Journal of chemical physics |
Volume | 66 |
Issue number | 7 |
DOIs | |
State | Published - 1976 |