scholarly journals Negative ion formation and fragmentation upon dissociative electron attachment to the nicotinamide molecule

RSC Advances ◽  
2021 ◽  
Vol 11 (51) ◽  
pp. 32425-32434
Author(s):  
Patrick Ziegler ◽  
Andrzej Pelc ◽  
Eugene Arthur-Baidoo ◽  
Joao Ameixa ◽  
Milan Ončák ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Pyridine Ring ◽  
Electron Attachment ◽  
Negative Ion ◽  
Dissociative Electron Attachment ◽  
Biologically Relevant ◽  
Ion Formation

In this study we show that the biologically relevant nicotinamide molecule dissociates into a variety of fragment anions upon electron attachment. The pyridine ring remains intact in all the dissociation reactions observed via mass spectrometry.

Negative ion formation in dissociative electron attachment to selected halogen derivatives of propane

2008 ◽  
Vol 277 (1-3) ◽  
pp. 103-106 ◽  
Author(s):  
W. Barszczewska ◽  
J. Kočíšek ◽  
J. Skalný ◽  
V. Matejčík ◽  
Š. Matejčík
Keyword(s):  
Electron Attachment ◽  
Negative Ion ◽  
Dissociative Electron Attachment ◽  
Ion Formation ◽  
Derivatives Of

Negative ion formation through dissociative electron attachment to GeH4: Comparative studies with CH4 and SiH4

2011 ◽  
Vol 306 (1) ◽  
pp. 51-56 ◽  
Author(s):  
M. Hoshino ◽  
Š. Matejčík ◽  
Y. Nunes ◽  
F. Ferreira da Silva ◽  
P. Limão-Vieira ◽  
...  
Keyword(s):  
Comparative Studies ◽  
Electron Attachment ◽  
Negative Ion ◽  
Dissociative Electron Attachment ◽  
Ion Formation

Dissociative Electron Attachment Processes in SO2 and NO2

1971 ◽  
Vol 49 (9) ◽  
pp. 1571-1574 ◽  
Author(s):  
D. A. Rallis ◽  
J. M. Goodings
Keyword(s):  
Kinetic Energy ◽  
Ground State ◽  
Electronic Excitation ◽  
Electron Attachment ◽  
Negative Ion ◽  
Dissociation Limit ◽  
Dissociative Electron Attachment ◽  
Zero Kinetic Energy ◽  
Trapped Electron ◽  
Second Peak

A trapped electron apparatus has been used to identify the processes involved in negative ion formation for the triatomic oxides SO2 and NO2. Two O− peaks are observed in SO2 with onset values at 4.2 ± 0.15 and 6.3 ± 0.2 eV, and peak values at 5.0 ± 0.15 and 7.4 ± 0.15 eV, respectively. From kinetic energy analysis of the O− ions, both peaks are found to have the same dissociation limit involving SO in its ground state. For NO2, two dissociative electron attachment peaks are observed with onset values at 1.6 ± 0.2 and 7.3 ± 0.3 eV, and peak values at 3.0 ± 0.2 and 8.1 ± 0.2 eV, respectively. The first broad peak is explained by overlapping contributions from two processes having the same dissociation limit involving ground state NO; they differ only in the amount of kinetic energy possessed by the fragments. The second peak appears to involve electronic excitation of the neutral fragment NO* with zero kinetic energy at onset.

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