Author: Annemarie SchmoltnerPublisher:
ISBN:
Category :
Languages : en
Pages : 628
Book Description
Molecular Beam Studies of Oxygen Atom Reactions with Unsaturated Hydrocarbons
Author: Annemarie SchmoltnerPublisher:
ISBN:
Category :
Languages : en
Pages : 628
Book Description
Reaction Mechanism of Oxygen Atoms with Unsaturated Hydrocarbons by the Crossed Molecular Beams Method
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
From a series of studies of the reaction of oxygen atoms with unsaturated hydrocarbons using the crossed molecular beam method, the dominant reaction mechanisms were found to be the simple substitution reactions with oxygen atoms replacing H, Cl, Br atom or alkyl groups. Complication due to secondary reaction was avoided by carrying out experiments under single collisions and observing primary products directly. Primary products were identified by measuring the angular and velocity distributions of products at all the mass numbers which could be detected by the mass spectrometer, and from comparison of these distributions, applying the requirement of energy and momentum conservation.
Crossed-molecular-beams Reactive Scattering of Oxygen Atoms
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The reactions of O(3P) with six prototypical unsaturated hydrocarbons, and the reaction of O(1D) with HD, have been studied in high-resolution crossed-molecular-beams scattering experiments with mass-spectrometric detection. The observed laboratory-product angular and velocity distributions unambiguously identify parent-daughter ion pairs, distinguish different neutral sources of the same ion, and have been used to identify the primary products of the reactions. The derived center-of-mass product angular and translational energy distributions have been used to elucidate the detailed reaction dynamics. These results demonstrate that O(3P)-unsaturated hydrocarbon chemistry is dominated by single bond cleavages, leading to radical products exclusively.
Reactions of Oxygen Atoms with Unsaturated Hydrocarbons
Author: Avramenko, L. IMolecular Beam Studies of Reaction Dynamics
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
Thrust was to elucidate simple elementary reactions and to unravel mechanism of complex/photochemical reactions. Molecular beams are used to study reactions between molecules or to monitor photodissociation events in a collision-free environment. Recent activities centered on reactions involving oxygen atoms with unsaturated hydrocarbons, endothermic substitution reactions, dependence of reactivity of excited atoms on alignment of excited orbitals, photochemical reactions of polyatomic, energy transfer, free radicals in combustion processes, infrared absorption spectra of carbonium ions and hydrated hydronium ions, and bond-selective photodissociation.
Crossed Molecular Beam Studies of Ground State Oxygen Atom Reactions
Author: Martin Philip HallReaction of Oxygen Atoms with Unsaturated Hydrocarbons
Author: National Research Council of Canada. Division of Building ResearchPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Crossed Molecular Beam Studies of Atmospheric Chemical Reaction Dynamics
Author: Jingsong ZhangCrossed Molecular Beam Study of the Reactions of Oxygen and Fluorine Atoms
Author: Yuan T. LeePublisher:
ISBN:
Category :
Languages : en
Pages : 82
Book Description
Rapid developments in the study of oxygen reaction chemistry occurred as it is succeeded in obtaining an O(1D) beam source and commenced investigating the dynamics of several important reactions of O(3P) and O(1D). In the reaction of O(3P) with C6H6 and C6D6, two competing channels, one producing a stabilized addition complex and the other forming radical products C6H50 + H has been identified. Studies of the effects of collision energy and of deuteration were used to clarify the reaction mechanism. The reaction of O(3P) with another aromatic hydrocarbon toluene, results in competition between two substitution channels, loss of H atom and loss of CH3. In contrast to the 0 + C6H6 reaction, no stabilized oxygen-toluene adduct was observed.
Molecular Beam Chemistry: Reactions of Oxygen Atoms with Halogen Molecules
Author: D. D. ParrishPublisher:
ISBN:
Category :
Languages : en
Pages : 72
Book Description
Molecular beam experiments show that reactions of oxygen atoms with Br2, I2,IC1, and IBr proceed via long-lived collision complexes. In the mixed halogen case, a large yield of IO was found, but no Cl0 or BrO. These results suggest the intermediate complexes are unsymmetrical species, O-Br-Br, O-I-Cl, which are probably stable by greater than 20 kcal/mol and in triplet spin states.