A survey of bimolecular ion-molecule reactions for use in modeling the chemistry of planetary atmospheres, cometary comae, and interstellar clouds

1986 ◽  
Vol 62 ◽  
pp. 553 ◽  
Author(s):  
V. G. Anicich ◽  
W. T., Jr. Huntress
Keyword(s):  
Planetary Atmospheres ◽  
Interstellar Clouds ◽  
Ion Molecule Reactions ◽  
Cometary Comae

Electronic Spectra of the Triacetylene Cation (HC6H+) and Protonated Triacetylene (HC6H2+) Tagged with Ar

2019 ◽  
Vol 72 (4) ◽  
pp. 260 ◽  
Author(s):  
Ugo Jacovella ◽  
Giel Muller ◽  
Katherine J. Catani ◽  
Nastasia I. Bartlett ◽  
Evan J. Bieske
Keyword(s):  
Electronic Spectrum ◽  
Gas Phase ◽  
Band System ◽  
Argon Atom ◽  
Planetary Atmospheres ◽  
Phase Spectrum ◽  
Tandem Mass ◽  
Interstellar Clouds ◽  
Combustion Processes ◽  
First Time

Polyacetylene cations (HC2nH+) play important roles in combustion processes and in the chemistry of planetary atmospheres and interstellar clouds. Here we report the electronic spectrum for the triacetylene cation (HC6H+) recorded over the 300–610nm range by photodissociating mass-selected ions tagged with argon atoms in a tandem mass spectrometer. The spectrum shows three band systems that are assigned to (origin transition 16665cm−1), (origin transition 23916cm−1), and (origin transition 29920cm−1). Although the band system is well known, the and band systems are observed for the first time in the gas phase. In addition, the electronic spectrum of the protonated triacteylene cation tagged with an argon atom (HC6-Ar) is reported, providing the first gas-phase spectrum for this species.

Laboratory studies of some of the major ion-molecule reactions occurring in cometary comae

1980 ◽  
Vol 44 ◽  
pp. 481 ◽  
Author(s):  
W. T., Jr. Huntress ◽  
V. G. Anicich ◽  
M. J. McEwan ◽  
Z. Karpas
Keyword(s):  
Laboratory Studies ◽  
Major Ion ◽  
Ion Molecule Reactions ◽  
Cometary Comae

scholarly journals Gas Phase Synthesis of Amino-, Cyano- and Nitroso-Compounds in Interstellar Clouds

1980 ◽  
Vol 87 ◽  
pp. 311-315
Author(s):  
Nigel G. Adams ◽  
David Smith
Keyword(s):  
Gas Phase ◽  
Laboratory Data ◽  
Nitroso Compounds ◽  
Phase Synthesis ◽  
Interstellar Clouds ◽  
Gas Phase Synthesis ◽  
Ion Molecule Reactions

From our laboratory data relating to several hundreds of ion-atom and ion-molecule reactions at thermal energies, we qualitatively describe probable chemical paths to the synthesis of amino-, cyano-and nitroso-compounds in interstellar clouds.

An ICR Study of Ion-Molecule Reactions in the C2H2/HCN System

1980 ◽  
Vol 87 ◽  
pp. 299-303 ◽  
Author(s):  
M.J. Mcewan ◽  
V. G. Anicich ◽  
W.T. Huntress
Keyword(s):  
Rate Constants ◽  
Interstellar Clouds ◽  
Ion Molecule Reactions

Rate constants obtained by the ICR technique are reported for reaction (1), C2H2+ + HCN and reaction (2) HCN+ + C2H2 such that k1 = 3.6 × 10−10 and k2 = 6.9 × 10−10 cm3 molecule−1 s−1, respectively. Differences between these results and other measurements of reaction (1) are discussed. The relevance of reaction (1) to the formation of HC3N in interstellar clouds is also briefly assessed.

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