Selectivity of gas-phase ion/molecule reaction of carbon dioxide with phenide ions

2014 ◽  
Vol 49 (8) ◽  
pp. 692-699 ◽  
Author(s):  
Chongming Liu ◽  
Yong Zhang ◽  
Athula B. Attygalle
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
Molecule Reaction ◽  
Gas Phase Ion

Gas phase ion–molecule reactions of dimethylsulphoxide

1978 ◽  
Vol 56 (17) ◽  
pp. 2324-2330 ◽  
Author(s):  
John Edward Fulford ◽  
Joseph Wayne Dupuis ◽  
Raymond Evans March
Keyword(s):  
Gas Phase ◽  
Ambient Pressure ◽  
Reaction Chamber ◽  
Ion Trapping ◽  
Ion Chemistry ◽  
Gas Phase Ion Chemistry ◽  
Molecule Reaction ◽  
Ion Molecule Reactions ◽  
Ion Storage ◽  
Gas Phase Ion

The gas phase ion-chemistry of dimethylsulphoxide (DMSO) and deuterated dimethylsulphoxide (DMSO-d6) has been examined using a quadrupole ion store (QUISTOR) as an ion–molecule reaction chamber. The QUISTOR results are compared with those obtained by ion trapping and high pressure mass spectrometry as reported by other workers. The performance of the QUISTOR demonstrates the versatility of the technique for ion–molecule reaction studies with variation of ambient pressure and duration of ion storage.

The fluoroformate ion, FCO2−. An ion cyclotron resonance study of the gas phase Lewis acidity of carbon dioxide and related isoelectronic species

1978 ◽  
Vol 56 (8) ◽  
pp. 1069-1074 ◽  
Author(s):  
Terrance Brian McMahon ◽  
Colleen Joan Northcott
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
Lewis Acidity ◽  
Ion Cyclotron Resonance ◽  
Dissociation Energies ◽  
Ion Molecule Reactions ◽  
Gas Phase Acidity ◽  
Gas Phase Ion ◽  
Carbonyl Fluoride

The gas phase ion molecule reactions of a number of potential fluoride donors with carbon dioxide and carbonyl fluoride have been studied. By determination of preferential directions of fluoride transfer the fluoride affinities of carbon dioxide and carbonyl fluoride have been bracketed and found to be 33 ± 3 kcal/mol and 35 + 3 kcal/mol respectively. In addition, from gas phase acidity studies of acetyl fluoride and 2-fluoropropene the fluoride affinities of ketene and allene have been calculated to be 38 ± 2 kcal/mol and 15 ± 2 kcal/mol respectively. The order of fluoride affinities (Lewis acidities) of carbon dioxide, ketene, and allene have been examined and explained in terms of the electron affinities of the F—C(A)(B) species (A,B=O,CH2) and the C—F bond dissociation energies. These quantities have been estimated and the latter interpreted on the basis of the π bond energies of the three compounds.

scholarly journals A Mechanistic Study of a Gas-Phase Ion/Molecule Reaction between CH2NH2+and CH4

1989 ◽  
Vol 62 (7) ◽  
pp. 2129-2137 ◽  
Author(s):  
Satoshi Okada ◽  
Yasuo Abe ◽  
Setsuo Taniguchi ◽  
Shinichi Yamabe ◽  
Tsutomu Minato
Keyword(s):  
Gas Phase ◽  
Mechanistic Study ◽  
Molecule Reaction ◽  
Gas Phase Ion

A Potential Surface Map of the H-/N2O System. The Gas Phase Ion Chemistry of HN2O-

1995 ◽  
Vol 48 (2) ◽  
pp. 155 ◽  
Author(s):  
JC Sheldon ◽  
RAJ Ohair ◽  
KM Downard ◽  
S Gronert ◽  
M Krempp ◽  
...  
Keyword(s):  
Gas Phase ◽  
Potential Surface ◽  
Excess Energy ◽  
Phase Reaction ◽  
Ion Chemistry ◽  
Gas Phase Ion Chemistry ◽  
Molecule Reaction ◽  
Deep Channel ◽  
Direct Formation ◽  
Gas Phase Ion

Dunkin, Fehsenfeld and Ferguson have reported that the gas phase reaction between H- and N2O in a flowing afterglow instrument forms HO- and N2 with medium efficiency. The potential surface (UMP2-FC/6-311++G**//RHF/6-311++G**) for the H-/N2O system confirms this to be the predominant reaction following initial approach of H- towards the central nitrogen of N2O to form unstable intermediate [H-(N2O)]. The intermediate then decomposes to HO- and N2 via a deep channel. The potential surface also shows the direct formation of adducts -O-+N(H)=N- and cis HN=NO-. However, these are formed with excess energy: the former converts principally into reactants, while the latter decomposes to HO- and N2. Ions having the formula 'HN2O-' may be formed in the gas phase by the reactions ( i ) HNO-+N2O → HN2O-+NO, and (ii) NH2-+Me3CCH2ONO → HN2O-+Me3CCH2OH. The product anion is stabilized by removal of some of its excess energy by the eliminated neutral. Evidence is presented which indicates that the product is either cis or trans HN=NO-, or a mixture of both. The characteristic ion molecule reaction of HN=NO- involves oxidative oxygen transfer to suitable neutral substrates. For example: HN2O-+CS2 → HS-+N2+COS.

Homogeneous catalysis of a gas-phase, ion-molecule reaction

1973 ◽  
Vol 95 (3) ◽  
pp. 927-928 ◽  
Author(s):  
John I. Brauman ◽  
Charles A. Lieder ◽  
Michael J. White
Keyword(s):  
Gas Phase ◽  
Homogeneous Catalysis ◽  
Molecule Reaction ◽  
Gas Phase Ion
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