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.

scholarly journals Studies of the initial steps in the polymerization of C2N2 induced by Xe+

1984 ◽  
Vol 62 (11) ◽  
pp. 2123-2126 ◽  
Author(s):  
Asit Baran Raksit ◽  
Diethard Kurt Bohme
Keyword(s):  
Charge Transfer ◽  
Electron Impact ◽  
Transfer Model ◽  
Spin States ◽  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube ◽  
Type C ◽  
Charge Transfer Model

A Selected-Ion Flow Tube (SIFT) apparatus has been used to produce Xe+ by electron impact and to study its reactions with C2N2. The 2P3/2 and 2P1/2 spin states of Xe+ were observed to react differently: by C2N2 addition to form Xe+•C2N2 and by charge transfer to form C2N2+, respectively. Further ion–molecule reactions with C2N2 were observed to establish polymeric ions of the type (C2N2)x+. The results indicate that the simple charge transfer model may be sufficient to account for the rate enhancement observed in the radiolytic polymerization of C2N2/Xe mixtures.

scholarly journals Selected Ion Flow Tube Study of the Ion−Molecule Reactions of Monochloroethene, Trichloroethene, and Tetrachloroethene

2008 ◽  
Vol 112 (38) ◽  
pp. 9012-9022 ◽  
Author(s):  
Victor A. Mikhailov ◽  
Michael A. Parkes ◽  
Matthew J. Simpson ◽  
Richard P. Tuckett ◽  
Chris A. Mayhew
Keyword(s):  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube ◽  
Tube Study

Selected Ion Flow Tube Study of Ion–Molecule Reactions of N+(3P) and Kr+with C3Hydrocarbons Propane, Propene, and Propyne

2011 ◽  
Vol 115 (25) ◽  
pp. 7310-7315 ◽  
Author(s):  
Kseniya Dryahina ◽  
Barbara K. Cunha de Miranda ◽  
Patrik Španěl ◽  
Jan Žabka ◽  
Christian Alcaraz ◽  
...  
Keyword(s):  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube ◽  
Tube Study

scholarly journals Direct analysis of aldehydes and carboxylic acids in the gas phase by negative ionization selected ion flow tube mass spectrometry: Quantification and modelling of ion–molecule reactions

2019 ◽  
Vol 33 (21) ◽  
pp. 1623-1634 ◽  
Author(s):  
Mylène Ghislain ◽  
Nathalie Costarramone ◽  
Jean‐Marc Sotiropoulos ◽  
Thierry Pigot ◽  
Robin Van Den Berg ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Carboxylic Acids ◽  
Direct Analysis ◽  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube ◽  
Negative Ionization

scholarly journals Ion-molecule reactions of several ions with ethylene oxide and propenal in a selected ion flow tube

2007 ◽  
Vol 18 (3) ◽  
pp. 445-452 ◽  
Author(s):  
Douglas M. Jackson ◽  
Nigel G. Adams ◽  
Lucia M. Babcock
Keyword(s):  
Ethylene Oxide ◽  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube

Selected-ion flow tube study of charge transfer from fullerene dications: "bracketing" the second ionization energies of C60 and C70

1992 ◽  
Vol 96 (15) ◽  
pp. 6121-6123 ◽  
Author(s):  
Simon Petrie ◽  
Gholamreza Javahery ◽  
Jinru Wang ◽  
Diethard K. Bohme
Keyword(s):  
Charge Transfer ◽  
Flow Tube ◽  
Ionization Energies ◽  
Ion Flow ◽  
Selected Ion Flow Tube ◽  
Tube Study

On the plasma polymerisation of allyl alcohol: an investigation of ion–molecule reactions using a selected ion flow tube

1997 ◽  
Vol 93 (10) ◽  
pp. 1961-1964 ◽  
Author(s):  
Liam O'Toole ◽  
Christopher A. Mayhew ◽  
Robert D. Short
Keyword(s):  
Allyl Alcohol ◽  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube ◽  
Plasma Polymerisation

A selected ion flow tube‐laser induced fluorescence instrument for vibrationally state‐specific ion‐molecule reactions

1993 ◽  
Vol 64 (10) ◽  
pp. 2808-2820 ◽  
Author(s):  
Shuji Kato ◽  
Michael J. Frost ◽  
Veronica M. Bierbaum ◽  
Stephen R. Leone
Keyword(s):  
Laser Induced Fluorescence ◽  
Flow Tube ◽  
Ion Flow ◽  
Ion Molecule Reactions ◽  
Selected Ion Flow Tube

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.

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