双电荷离子质谱研究——Ⅰ.1,4-二(β-取代苯基乙烯基)苯的2E谱

A Study on Doubly Charged Ion Mass Spectra Ⅰ.2E Mass Spectra for 1,4-Bis(β-Substituted Phenyl Ethenyl) Benzene

本文利用2E谱技术获得了12个1,4-二(β-取代苯基乙烯基)苯的双电荷离子质谱。总结了这类化合物的双电荷离子质谱特征,讨论了不同取代基的影响和位置异构体的区别。2E谱比常规质谱给出了更多的结构信息。

2E mass spectra for doubly charged ions of twelve 1, 4-bis(β-substituted phenyl ethenyl) benzene were studied using a modifed VG-7070E double focusing mass spectrometer. Prominent molecular ions were observed in 2E spectra for the compounds. The characteristic fragmentation and cleavage of the doubly charged ions of the compounds were summarized and the effects of substitutents were discussed. 2E spectra showed some differences for isomers, so more structural information could be obtained from their doubly charged ions.