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Published on: July 27, 2018
Dissociative Electron Attachment to Hexachlorobenzene
Alexey A Goryunkov1, Nail L Asfandiarov2, Rustam G Rakhmeev2
1Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991, Moscow, Russia.
Abstract:
Gas phase molecules of hexachlorobenzene (C6 Cl6 ) were investigated by means of dissociative electron attachment spectroscopy (DEAS). Three channels of molecular negative ions decay have been identified: abstraction of Cl- and Cl2- as well as electron detachment (τa ∼250 μs at 343 K). All three channels exhibit temperature dependence. The adiabatic electron affinity estimated using a simple but typically accurate Arrhenius model (EAa =1.6-1.9 eV) turns out to be much higher than the quantum-chemical predictions (EAa =0.9-1.0 eV). We discuss the possible reasons behind the observed discrepancy.
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