Probing Isomers of the Benzene Dication in a Low-Temperature Trap
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- 作者：Juraj Ja拧铆k ; Dieter Gerlich ; Jana Roithov谩
- 刊名：Journal of the American Chemical Society
- 出版年：2014
- 出版时间：February 26, 2014
- 年：2014
- 卷：136
- 期：8
- 页码：2960-2962
- 全文大小：264K
- 年卷期：v.136,no.8(February 26, 2014)
- ISSN：1520-5126
文摘
The structure of doubly ionized benzene has been spectroscopically studied for the first time. Helium-tagged complexes were prepared at temperatures below 4 K and analyzed using infrared predissociation spectroscopy. Double ionization of benzene yields primarily high-energy dications with a six-membered-ring structure. Some of the dications undergo rearrangement to a more stable pyramidal isomer with a C5H5 base and CH at the apex. By means of isomer-selective heating by a CO2 laser, infrared predissociation spectra of both the classical and pyramidal dications were obtained.