Chemical Synthesis of Ozone, Isotopic Labeling, and Redistribution
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- 作者：Anton Dimitrov ; Konrad Seppelt ; Dieter Scheffler ; and Helge Willner
- 刊名：Journal of the American Chemical Society
- 出版年：1998
- 出版时间：September 2, 1998
- 年：1998
- 卷：120
- 期：34
- 页码：8711 - 8714
- 全文大小：54K
- 年卷期：v.120,no.34(September 2, 1998)
- ISSN：1520-5126
文摘
Ozone is formed in good yield by reacting O2+ salts with water in HF at -78 
C. With isotopicallylabeled water 17O-16O-16O and 18O-16O-16O can be prepared, and other isotopomers could be made bystarting with 17O2+ and 18O2+ precursors. 17O NMR spectroscopy and IR matrix spectroscopy are used fordetection and decay of the isotopomers. The 17O or 18O label at the terminal position remains at -78 C, butat higher temperatures scrambling of the atoms is observed. Under strict monomolecular conditions noscrambling is observed till 450 C, however. Irradiation of ozone in a 15K argon matrix with 
= 254 nmaffords scrambling of the label and formation of oxygen. Irradiation with > 420 nm initiates only scramblingwith little decay. The possible mechanisms of the atomic scrambling are discussed.
C. With isotopicallylabeled water 17O-16O-16O and 18O-16O-16O can be prepared, and other isotopomers could be made bystarting with 17O2+ and 18O2+ precursors. 17O NMR spectroscopy and IR matrix spectroscopy are used fordetection and decay of the isotopomers. The 17O or 18O label at the terminal position remains at -78 C, butat higher temperatures scrambling of the atoms is observed. Under strict monomolecular conditions noscrambling is observed till 450 C, however. Irradiation of ozone in a 15K argon matrix with = 254 nmaffords scrambling of the label and formation of oxygen. Irradiation with > 420 nm initiates only scramblingwith little decay. The possible mechanisms of the atomic scrambling are discussed.