期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 20, 期 21, 页码 14331-14338出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp08566d
关键词
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资金
- MEXT Japan [16H00930, 2507]
- JSPS [16K05640]
- Guangzhou Elite Project
- Grants-in-Aid for Scientific Research [16K05640, 16H00930, 2507] Funding Source: KAKEN
An ionization-induced multistage reaction of an ionized diethylether (DEE) dimer involving isomerization, proton transfer, and dissociation is investigated by combining infrared (IR) spectroscopy, tandem mass spectrometry, and a theoretical reaction path search. The vertically-ionized DEE dimer isomerizes to a hydrogen-bonded cluster of protonated DEE and the [DEE-H] radical through barrierless intermolecular proton transfer from the CH bond of the ionized moiety. This isomerization process is confirmed by IR spectroscopy and the theoretical reaction path search. The multiple dissociation pathways following the isomerization are analyzed by tandem mass spectrometry. The isomerized cluster dissociates stepwise into a [protonated DEE-acetaldehyde (AA)] cluster, protonated DEE, and protonated AA. The structure of the fragment ion is also analyzed by IR spectroscopy. The reaction map of the multistage processes is revealed through a harmony of these experimental and theoretical methods.
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