Product distributions and rate constants for ion‐molecule reactions in water, hydrogen sulfide, ammonia, and methane

1973 ◽  
Vol 59 (9) ◽  
pp. 4742-4756 ◽  
Author(s):  
W. T. Huntress ◽  
R. F. Pinizzotto
Keyword(s):  
Hydrogen Sulfide ◽  
Rate Constants ◽  
Ion Molecule Reactions ◽  
Product Distributions ◽  
Water Hydrogen

Ion–molecule reactions in vinyl fluoride

1969 ◽  
Vol 47 (6) ◽  
pp. 957-964 ◽  
Author(s):  
J. A. Herman ◽  
A. G. Harrison
Keyword(s):  
Charge Transfer ◽  
Rate Constants ◽  
Order Reaction ◽  
Third Order ◽  
Vinyl Fluoride ◽  
Ion Molecule Reactions ◽  
Fragment Ions ◽  
Consecutive Reactions ◽  
Product Distributions ◽  
The Individual

The ion–molecule reactions in vinyl fluoride have been studied as a function of pressure and electron energy. The C2H2+ and C2HF+ fragment ions react predominantly by charge transfer while C2H3+ produces C2H4F+ and C4H5+. The C2H2F+ fragment forms C2H4F+, CHF2+, C2H3F2+, C4H4F+, and probably C2H3+. The rate constants for the individual reactions have been measured. The C2H3F+ ion reacts to form C3H5+, C3H4F+, C3H3F2+, and C4H5F+ (in minor yield), both by a second order and by a third order reaction. The rate constants and product distributions from the individual reactions have been evaluated. A number of consecutive reactions have been identified and shown to be third order processes.

Ion-molecule reactions in mixture of methane with water, hydrogen sulfide, and ammonia

1973 ◽  
Vol 95 (13) ◽  
pp. 4107-4115 ◽  
Author(s):  
Wesley T. Huntress ◽  
Russell F. Pinizzotto ◽  
James B. Laudenslager
Keyword(s):  
Hydrogen Sulfide ◽  
Ion Molecule Reactions ◽  
Water Hydrogen

ChemInform Abstract: ION-MOLECULE REACTIONS IN MIXTURES OF METHANE WITH WATER, HYDROGEN SULFIDE, AND AMMONIA

1973 ◽  
Vol 4 (35) ◽  
Author(s):  
WESLEY T. JUN. HUNTRESS ◽  
RUSSELL F. JUN. PINIZZOTTO ◽  
JAMES B. LAUDENSLAGER
Keyword(s):  
Hydrogen Sulfide ◽  
Ion Molecule Reactions ◽  
Water Hydrogen

An ICR mass spectrometry study of ion/molecule reactions between ethyl chloride and alkylamines

1991 ◽  
Vol 69 (2) ◽  
pp. 363-367
Author(s):  
Guoying Xu ◽  
Jan A. Herman
Keyword(s):  
Mass Spectrometry ◽  
Key Words ◽  
Rate Constant ◽  
Rate Constants ◽  
Ethyl Chloride ◽  
Ion Molecule Reactions ◽  
Mass Spectrometry Study ◽  
Ethyl Cation

Ion/molecule reactions in mixtures of ethyl chloride with C1–C4 alkylamines were studied by ICR mass spectrometry. Ethyl cation transfer to C1–C4 alkylamines proceeds mainly through diethylchloronium ions with rate constants ~3 × 10−10cm3 s−1. In the case of s-butylamine the corresponding rate constant is 0.5 × 10−10 cm3 s−1. Key words: ICR mass spectrometry, ion/molecule reactions, ethylchloride, methylamine, ethylamine, propylamines, butylamines

Mechanism and Structure in the Ion Chemistry of Tetramethyldiphosphine: An Ion Cyclotron Resonance Spectrometric Study

1976 ◽  
Vol 31 (5) ◽  
pp. 414-421 ◽  
Author(s):  
Karl-Peter Wanczek
Keyword(s):  
Mass Spectrum ◽  
Rate Constants ◽  
Cyclotron Resonance ◽  
Double Resonance ◽  
Ion Cyclotron Resonance ◽  
Spectrometric Study ◽  
Ion Chemistry ◽  
Ion Molecule Reactions ◽  
Ion Cyclotron ◽  
Ion Cyclotron Resonance Spectrometry

Abstract The mass spectrum of tetramethyldiphosphine and the ion chemistries of this compound and of its mixtures with phosphine and dimethylphosphine have been investigated by ion cyclotron resonance spectrometry. Numerous ion molecule reactions have been observed. The rate constants of the two most abundant ions formed by the molecular ion, the tetramethyldiphosphonium ion, H(CH3)2P-P(CH3)2+ and the hexamethyltriphosphonium ion, P3(CH3)6+ , are k2.35≦0.1X10-10 cm3 molecule-1 s-1 and k2.40 = 1.5 X10-10 cm3 molecule -1 s -1 respectively. The structures of several ions have been determined with the aid of their ion-molecule reactions. The ions m/e = 79 and 93 are thought to have the structures HP - P(CH3)H+ and HP-P(CH3)2+ . The most probable structures of the ions m/e = 169 and 183 are HP(CH3)2-P(CH3)-P(CH3)2+ and (CH3)2P-P(CH3) - P(CH3)3+ . The protonated molecule undergoes several ion-molecule reactions, which proceed via an intermediate, m/e = 183, [(CH3)6P3+]* which is detected by double resonance experiments.

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.

scholarly journals Theoretical investigation of the reaction mechanisms and kinetics of CFCl2CH2O2 and ClO in the atmosphere

RSC Advances ◽  
2020 ◽  
Vol 10 (44) ◽  
pp. 26433-26442
Author(s):  
Yunju Zhang ◽  
Bing He
Keyword(s):  
Theoretical Investigation ◽  
Rate Constants ◽  
Reaction Mechanisms ◽  
Basis Sets ◽  
Thermal Rate Constants ◽  
Product Distributions ◽  
Kinetics Of

The reaction between CFCl2CH2O2 radicals and ClO was studied using the B3LYP and CCSD(T) methods associated with the 6-311++G(d,p) and cc-pVTZ basis sets, and subsequently RRKM-TST theory was used to predict the thermal rate constants and product distributions.

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