Selected-ion flow tube studies of reactions of the carbene cation:C4N+ and their implications for interstellar gas cloud chemistry

1987 ◽  
Vol 65 (7) ◽  
pp. 1563-1567 ◽  
Author(s):  
Diethard K. Bohme ◽  
Stanislaw Wlodek ◽  
Asit B. Raksit
Keyword(s):  
Room Temperature ◽  
Buffer Gas ◽  
Reaction Products ◽  
Cloud Chemistry ◽  
Flow Tube ◽  
Interstellar Gas ◽  
Ion Flow ◽  
Selected Ion Flow Tube ◽  
Synthetic Routes ◽  
Gas Cloud

The carbene cation:C4N+ was generated in a Selected-Ion Flow Tube (SIFT) apparatus from allyl cyanide by electron impact and reacted at room temperature in helium buffer gas at ca. 0.33 mm Hg with the molecules H2, CO, HCN, CH4, CD4, H2O, HC3N, C2H2, CH3CN, CD3CN, H2S, NH3, ND3, and C4H2. The reactions were observed to exhibit a range in reactivity and a variety of reaction products. The observed products are consistent with expectations based on the carbene character of:C4N+. The results have implications for the role of:C4N+ as a reaction intermediate in the chemistry of interstellar gas clouds. Possible synthetic routes initiated by:C4N+ are proposed for the formation of dicyanoacetylene, cyanodiacetylene, and several acyclic as well as cyclic neutral carbenes.

Flow-tube studies of reactions of selected ions with cyanoacetylene

1985 ◽  
Vol 63 (4) ◽  
pp. 854-861 ◽  
Author(s):  
A. B. Raksit ◽  
D. K. Bohme
Keyword(s):  
Charge Transfer ◽  
Active Role ◽  
Flow Tube ◽  
Interstellar Gas ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Product Distributions ◽  
Selected Ion Flow Tube ◽  
Molecular Synthesis

Rate constants and product distributions have been determined for ion/molecule reactions of cyanoacetylene (HC3N) with He+, C+(2P), CH3+, C2+, C2H+, C2H2+, CN+, C2N+, C2N2+, N2+, CO+, H3+, N2H+, HCO+, C2H3+, H3O+, CH3NO2H+, CH3CNH+, (CH3)2COH+, i-C3H7OH2, C3H+, and C4N+. The measurements were performed with the selected-ion flow-tube (SIFT) technique at 296 ± 2 K. The observed reactions exhibit a variety of pathways including charge transfer, proton transfer, condensation, and association. The condensation and association reactions are suited for molecular growth by ion/molecule reactions. Special consideration is given to the active role of cyanoacetylene in the possible molecular synthesis which occurs in dense interstellar gas clouds by ion/molecule reactions.

Cross Platform Analysis of Volatile Organic Compounds Using Selected Ion Flow Tube and Proton-Transfer-Reaction Mass Spectrometry

2021 ◽  
Author(s):  
Geng-Ping Lin ◽  
Bhamini Vadhwana ◽  
Ilaria Belluomo ◽  
Piers R. Boshier ◽  
Patrik Španěl ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Organic Compounds ◽  
Transfer Reaction ◽  
Proton Transfer Reaction ◽  
Reaction Mass ◽  
Flow Tube ◽  
Ion Flow ◽  
Volatile Organic ◽  
Selected Ion Flow Tube ◽  
Cross Platform

Dairy product quality using screening of aroma compounds by selected ion flow tube‒mass spectrometry: A chemometric approach

2021 ◽  
pp. 105107
Author(s):  
Jackie E. Wood ◽  
Brendon D. Gill ◽  
Wendy Longstaff ◽  
Robert A. Crawford ◽  
Harvey E. Indyk ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Product Quality ◽  
Dairy Product ◽  
Aroma Compounds ◽  
Flow Tube ◽  
Ion Flow ◽  
Selected Ion Flow Tube ◽  
Chemometric Approach

scholarly journals Status of selected ion flow tube MS: accomplishments and challenges in breath analysis and other areas

Bioanalysis ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 1183-1201 ◽  
Author(s):  
David Smith ◽  
Patrik Španěl
Keyword(s):  
Breath Analysis ◽  
Flow Tube ◽  
Ion Flow ◽  
Selected Ion Flow Tube

A selected-ion flow tube study of the C+ + H2O reaction

1987 ◽  
Vol 75 (1) ◽  
pp. 127-131 ◽  
Author(s):  
Colin G. Freeman ◽  
Murray J. McEwan
Keyword(s):  
Flow Tube ◽  
Ion Flow ◽  
Selected Ion Flow Tube ◽  
Tube Study

Electron attachment to and anion reactions with SF5Cl: electron-swarm and selected ion flow tube studies

2004 ◽  
Vol 233 (1-3) ◽  
pp. 259-265 ◽  
Author(s):  
C.A. Mayhew ◽  
A. Critchley ◽  
G.K. Jarvis
Keyword(s):  
Electron Attachment ◽  
Flow Tube ◽  
Ion Flow ◽  
Selected Ion Flow Tube
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