喷气冷却的 4-苯基苄基和 4-（4'-甲基苯基）苄基自由基的激发光谱。
Excitation spectra of the jet-cooled 4-phenylbenzyl and 4-(4'-methylphenyl)benzyl radicals.
机构信息
School of Chemistry, The University of Sydney, NSW 2006, Australia.
出版信息
J Phys Chem A. 2012 Nov 8;116(44):10780-5. doi: 10.1021/jp309003u. Epub 2012 Oct 25.
The excitation spectra of jet-cooled 4-phenylbenzyl and 4-(4'-methylphenyl)benzyl radicals have been identified by a combination of resonant two-color two-photon ionization mass spectrometry and quantum chemical methods. Both radicals exhibit progressions in the biphenyl torsional mode, peaking near ν = 17. The lowest observed peak for 4-phenylbenzyl was observed at 18598 cm(-1) and is estimated to be the ν = 3 of the progression, while the lowest observed peak for the 4-(4'-methylphenyl)benzyl radical was observed at 18183 cm(-1) and is possibly the origin. The spectra are discussed and compared to other biphenyl and benzyl chromophores.
喷气冷却的 4-苯基苄基和 4-(4'-甲基苯基)苄基自由基的激发光谱通过共振双色双光子电离质谱和量子化学方法的组合来识别。这两种自由基都在联苯扭转模式中表现出了进展，在 ν = 17 附近达到峰值。对于 4-苯基苄基，观察到的最低峰出现在 18598 cm(-1)，估计为该进展的 ν = 3，而对于 4-(4'-甲基苯基)苄基自由基，观察到的最低峰出现在 18183 cm(-1)，可能是起源。讨论了这些光谱，并与其他联苯和苄基生色团进行了比较。
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