Abstract
We present experimental dissociative electron attachment (DEA) study to two halocarbon-derivatives of nitro-benzene, 1-nitro-3(1122-tetrafluoroethoxy)-benzene (NTFOB) (CAS 1644-21-9) and 4-fluoro-3-nitro-benzo-trifluoride (FNBTF) (CAS 367-86-2) using crossed electron-molecule beam apparatus with trochoidal electron monochromator. The interactions of electron with these molecules resulted in efficient capture of thermal electrons and observation of long living Transient Negative Ions (TNI). At elevated electron energies dissociative attachment products were formed via several resonances. The formation of NO2− group was less efficient process in comparison to nitro-derivatives of benzene. The most efficient dissociation channel in NTFOB was direct dissociation of CHF2–CF2O− (m/z 117) with nitro-benzene as neutral product and in the case of FNBTF major product was ion m/z 178 formed via abstraction of HNȮ radical as the neutral fragment.
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