Fragment and cluster ions from gaseous and condensed pyridine produced under electron impact

2018 ◽  
Vol 20 (40) ◽  
pp. 25762-25771 ◽  
Author(s):  
Fabio de A. Ribeiro ◽  
Benedikt Rudek ◽  
Henrique B. A. Cerqueira ◽  
Ricardo R. Oliveira ◽  
Alexandre B. Rocha ◽  
...  
Keyword(s):  
Gas Phase ◽  
Electron Impact ◽  
Cluster Ions ◽  
Ion Distribution ◽  
Carbenium Ion ◽  
The Stability ◽  
And Shifts ◽  
Gas Phase Fragmentation

The ion-distribution from condensed pyridine due to 2 keV electron impact shows hydrogenated fragments and clusters with m/z ≤ 320 u and shifts towards higher masses compared to the gas-phase fragmentation. The formation of a bond between the pyridine and a carbenium ion is crucial for the stability of the selected cluster ions.

Graph theory-based reaction pathway searches and DFT calculations for the mechanism studies of free radical-initiated peptide sequencing mass spectrometry (FRIPS MS): a model gas-phase reaction of GGR tri-peptide

2020 ◽  
Vol 22 (9) ◽  
pp. 5057-5069 ◽  
Author(s):  
Jae-ung Lee ◽  
Yeonjoon Kim ◽  
Woo Youn Kim ◽  
Han Bin Oh
Keyword(s):  
Graph Theory ◽  
Dft Calculations ◽  
Gas Phase ◽  
Density Functional ◽  
Reaction Pathway ◽  
Peptide Sequencing ◽  
Phase Reaction ◽  
Functional Theory ◽  
Fragmentation Mechanisms ◽  
Gas Phase Fragmentation

A new approach for elucidating gas-phase fragmentation mechanisms is proposed: graph theory-based reaction pathway searches (ACE-Reaction program) and density functional theory (DFT) calculations.

scholarly journals Two competitive INC-mediated reactions in the gas-phase fragmentation of protonated indolyl benzo[b]carbazoles

2016 ◽  
Vol 30 ◽  
pp. 20-23 ◽  
Author(s):  
Xiaoping Zhang ◽  
Kezhi Jiang ◽  
Jingfeng Zou ◽  
Zuguang Li ◽  
Mawrong Lee
Keyword(s):  
Gas Phase ◽  
Gas Phase Fragmentation

Thermochemical stabilities of the gas-phase cluster ions H3C+(N2)n

2003 ◽  
Vol 227 (3) ◽  
pp. 391-399 ◽  
Author(s):  
Kenzo Hiraoka ◽  
Kiyotoshi Takao ◽  
Fumiyuki Nakagawa ◽  
Tomoyuki Iino ◽  
Masayumi Ishida ◽  
...  
Keyword(s):  
Gas Phase ◽  
Cluster Ions ◽  
Phase Cluster

Gas-Phase Fragmentation of Polyoxotungstate Anions

2009 ◽  
Vol 48 (2) ◽  
pp. 598-606 ◽  
Author(s):  
Michelle T. Ma ◽  
Tom Waters ◽  
Karin Beyer ◽  
Rosemary Palamarczuk ◽  
Peter J. S. Richardt ◽  
...  
Keyword(s):  
Gas Phase ◽  
Gas Phase Fragmentation

scholarly journals On the Origin of the Surprisingly Sluggish Redox Reaction of the N2O/CO Couple Mediated by [Y2O2]+.and [YAlO2]+.Cluster Ions in the Gas Phase

2012 ◽  
Vol 125 (4) ◽  
pp. 1264-1268 ◽  
Author(s):  
Jia-Bi Ma ◽  
Zhe-Chen Wang ◽  
Maria Schlangen ◽  
Sheng-Gui He ◽  
Helmut Schwarz
Keyword(s):  
Gas Phase ◽  
Redox Reaction ◽  
Cluster Ions

scholarly journals Functional Group Selective Derivatization and Gas-Phase Fragmentation Reactions of Plasmalogen Glycerophospholipids

2013 ◽  
Vol 2 (Special_Issue) ◽  
pp. S0015-S0015 ◽  
Author(s):  
Cassie J. Fhaner ◽  
Sichang Liu ◽  
Xiao Zhou ◽  
Gavin E. Reid
Keyword(s):  
Gas Phase ◽  
Functional Group ◽  
Fragmentation Reactions ◽  
Gas Phase Fragmentation
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