Mass spectra of nitro-beta,beta-dihalostyrenes.
The electron ionization (EI) fragmentation of nitro-beta,beta-dihalostyrenes depends strongly on the specific halogens present as well as on the position of the nitro group. Beta,beta-difluorostyrenes yielded mainly fluoroacetylene ions as the base peaks and o-nitro-beta,beta-dihalostyrene possibly furnished the ion with a structure similar to that of benzo[a]isoxazole (11). The structural identity of the ion was verified by comparing the collision-induced dissociation (CID) spectra of m/z 119 ions from p- and o-nitro-beta,beta-difluorostyrene, o-nitro-beta,beta-dibromostyrene and compound 11.
Lin
Shaw-Tao
ST
Department of Applied Chemistry, Providence University, Sha-Lu, Taichung Hsien, Taiwan 433. sdlin@pu.edu.tw
Lee
Chun-Jen
CJ
Chen
Li-Chwen
LC
Huang
Keh-Feng
KF
D008401:Gas Chromatography-Mass Spectrometry; D006846:Hydrocarbons, Halogenated / Q000737:chemistry; D009574:Nitro Compounds; D021241:Spectrometry, Mass, Electrospray Ionization; D013343:Styrenes / Q000737:chemistry*
D006846:Hydrocarbons, Halogenated; D009574:Nitro Compounds; D013343:Styrenes