Electron-induced vibrational excitation and dissociative electron attachment in methyl formate

2020 ◽  
Vol 22 (2) ◽  
pp. 518-524 ◽  
Author(s):  
Ragesh Kumar T. P. ◽  
J. Kočišek ◽  
K. Bravaya ◽  
J. Fedor
Keyword(s):  
Methyl Formate ◽  
Vibrational Excitation ◽  
Electron Attachment ◽  
Low Energy ◽  
Energy Electron ◽  
Dissociative Electron Attachment ◽  
Electron Collisions ◽  
Resonant States ◽  
Low Energy Electron

We probe the low-energy electron collisions with methyl formate HCOOCH3, focusing on its resonant states.

Dissociation of methyl formate (HCOOCH3) molecules upon low-energy electron attachment

2018 ◽  
Vol 617 ◽  
pp. A102 ◽  
Author(s):  
L. Feketeová ◽  
A. Pelc ◽  
A. Ribar ◽  
S. E. Huber ◽  
S. Denifl
Keyword(s):  
Quantum Chemical Calculations ◽  
Electron Energy ◽  
Quantum Chemical ◽  
Methyl Formate ◽  
Experimental Studies ◽  
Electron Attachment ◽  
Low Energy ◽  
Energy Electron ◽  
Molecular Anion ◽  
Low Energy Electron

Context. The methyl formate molecule (HCOOCH3) is considered to be a key molecule in astrochemistry. The abundance of this molecule in space depends on the stability upon irradiation with particles like low-energy electrons. Aims. We have investigated the decomposition of the molecule upon electron capture in the electron energy range from about 0 eV up to 15 eV. All experimentally obtained fragmentation channels of the molecular anion were investigated by quantum chemical calculations. Methods. A high resolution electron monochromator coupled with quadrupole mass spectrometer was used for the present laboratory experiment. Quantum chemical calculations of the electron affinities of the generated fragments, the thermodynamic thresholds and the activation barriers for the associated reaction channels were carried out to complement the experimental studies. Results. Electron attachment is shown to be a purely dissociative process for this molecule and proceeds within two electron energy regions of about 1 eV to 4 eV and from 5 eV to 14 eV. In our experiment five anionic fragments with m/z (and possible stoichiometric structure) 59 (C2H3O2−), 58 (C2H2O2−), 45 (CHO2−) 31 (CH3O−), and 29 (CHO−) were detected. The most abundant anion fragments that are formed through dissociative electron attachment to methyl formate are the complementary anions CH3O− and CHO−, associated with the same single bond cleavage and different survival probability. Conclusions. The low-energy electron induced dissociation of methyl formate differs from its isomers acetic acid and glycolaldehyde, which leads to possible chemical selectivity in the chemical evolution.

scholarly journals Dissociation dynamics in low energy electron attachment to ammonia using velocity slice imaging

2019 ◽  
Vol 21 (39) ◽  
pp. 21908-21917
Author(s):  
Dipayan Chakraborty ◽  
Aranya Giri ◽  
Dhananjay Nandi
Keyword(s):  
Electron Attachment ◽  
Low Energy ◽  
Energy Electron ◽  
Ammonia Molecule ◽  
Dissociative Electron Attachment ◽  
Energy Resonance ◽  
Dissociation Dynamics ◽  
Low Energy Electron ◽  
Slice Imaging

The proposed mechanism for experimentally observed fragmentation channels in dissociative electron attachment to the ammonia molecule at higher energy resonance.

scholarly journals Selective bond cleavage in RAFT agents promoted by low‐energy electron attachment

2021 ◽  
Author(s):  
Farhad Izadi ◽  
Eugene Arthur-Baidoo ◽  
Lisa T. Strover ◽  
Li-Juan Yu ◽  
Michelle L. Coote ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Electron Attachment ◽  
Low Energy ◽  
Energy Electron ◽  
Low Energy Electron
Sign in / Sign up

Export Citation Format

Share Document