STRUCTURES OF DECOMPOSING AND NON-DECOMPOSING GAS-PHASE [C4H6O]+. RADICAL CATIONS, AND THEIR [C2H2O]+. AND [C3H6]+. PRODUCT IONS

被引：26

作者：

DASS, C ^{[1
]}

GROSS, ML ^{[1
]}

机构：

[1] UNIV NEBRASKA,DEPT CHEM,LINCOLN,NE 68588

来源：

ORGANIC MASS SPECTROMETRY | 1990年 / 25卷 / 01期

关键词：

D O I：

10.1002/oms.1210250107

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The structures of gas‐phase [C4H6O]+· radical cations and their daughter ions of composition [C2H2O]+· and [C3H6]+· were investigated by using collisionally activated dissociation, metastable ion measurement, kinetic energy release and collisional ionization tandem mass spectrometric techniques. Electron ionization (70 eV) of ethoxyacetylene, methyl vinyl ketone, crotonaldehyde and 1‐methoxyallene yields stable [C4H6O]+· ions, whereas the cyclic C4H6O compounds undergo ring opening to stable distonic ions. The structures of [C2H3O]+· ions produced by 70‐eV ionization of several C4H6O compounds are identical with that of the ketene radical cation. The [C3H6]+· ions generated from crotonaldehyde, methacrylaldehyde, and cyclopropanecarboxaldehyde have structures similar to that of the propene radical cations, whereas those ions generated from the remainder of the [C4H6O]+· ions studied here produced a mixed population of cyclopropane and propene radical cations. Copyright © 1990 John Wiley & Sons, Ltd.

引用

页码：24 / 32

页数：9

共 62 条

[1] H2-TRANSFER REACTIONS IN GAS-PHASE RADIOLYSIS OF HYDROCARBONS [J].