Photochemistry of Hydrocarbon Radicals

Hydrocarbon radicals are ideal model systems to understand the dynamics of chemical reactions. In addition they are of considerable importance in high-energy environments, such as combustion engines or hydrocarbon crackers. In order to understand their reactions, we deposit a known amount...

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Bibliographic Details
Main Author: Ingo Fischer
Format: Article
Language:deu
Published: Swiss Chemical Society 2000-03-01
Series:CHIMIA
Subjects:
Online Access:https://www.chimia.ch/chimia/article/view/3239
Description
Summary:Hydrocarbon radicals are ideal model systems to understand the dynamics of chemical reactions. In addition they are of considerable importance in high-energy environments, such as combustion engines or hydrocarbon crackers. In order to understand their reactions, we deposit a known amount of energy in the radicals by laser excitation and observe the subsequent dynamics by two experimental methods, a) picosecond time-resolved photoelectron spectroscopy and b) nanosecond photoionization of hydrogen atoms, the major reaction product in many radical reactions.Recent results for three radicals are summarized and discussed: allyl (C3H5), propargyl (C3H3), and ethyl (C2H5). We report the major reaction products, the pathways leading to these products, their rates of formation, and translational energy releases.
ISSN:0009-4293
2673-2424