Production and trapping of HOSO2 from the gaseous reaction OH+SO2: the infrared absorption of HOSO2 in solid argon

Yu Ping Kuo, Bing Ming Cheng, Yuan-Pern Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


HOSO2 has been generated in a gaseous discharge-flow sustem at 300 K under 2-5 Torr of Ar by the reaction of OH with SO2. A small portion of the gas mixture in the flow reactor was sampled and condensed onto a CsI window maintained at 12 K. In the infrared spectrum of the matrix, absorption lines at 3539.8, 1309.2, 1097.2, 759.3 and (with less certainty) 1296.2 cm-1 have been assigned to HOSO2 on the basis of 34S- and 2H-isotopic shifts. When O2 was present in the flow reactor, HOSO2 became undetectable, whereas HO2 and SO3 were identified.

Original languageEnglish
Pages (from-to)195-199
Number of pages5
JournalChemical Physics Letters
Issue number2
StatePublished - 15 Feb 1991


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