The reactions of Si sup + ions with CH sub 3 SiH sub 3 , CH sub 3 SiD sub 3 , C sub 2 H sub 6 , and CH sub 3 CHD sub 2
Journal Article
·
· Journal of Chemical Physics; (United States)
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
The reactions of Si{sup +} with CH{sub 3}SiH{sub 3}, CH{sub 3}SiD{sub 3}, C{sub 2}H{sub 6}, and CH{sub 3}CHD{sub 2} have been studied in a tandem mass spectrometric apparatus over the kinetic energy range of 1--10 eV laboratory-frame-of reference (LAB). In all systems, the major process is the formation of SiCH{sup +}{sub 3}, as well as SiCH{sub 2}D{sup +} and SiCHD{sup +}{sub 2} in the case of the reaction with CH{sub 3}CHD{sub 2}. It is shown that in the reaction of Si{sup +} with CH{sub 3}SiH{sub 3} and CH{sub 3}SiD{sub 3}, the process is best described as a Walden inversion, while in the reaction with C{sub 2}H{sub 6} and CH{sub 3}CHD{sub 2}, the process appears to approximate the spectator stripping model or modified spectator stripping (polarization-reflection model). In the reaction with CH{sub 3}CHD{sub 2}, the slight preference of Si{sup +} to strip the CH{sub 3} radical rather than the CHD{sub 2} radical is shown to be in accord with a cross-sectional energy dependence of approximately {ital E}{sup {minus}1}.
- DOE Contract Number:
- FG02-88ER13835
- OSTI ID:
- 5021861
- Journal Information:
- Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 96:4; ISSN JCPSA; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKYL RADICALS
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CROSS SECTIONS
DEUTERATION
ENERGY
ENERGY DEPENDENCE
ENERGY RANGE
ETHANE
EV RANGE
EV RANGE 01-10
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
IONS
KINETIC ENERGY
MEASURING INSTRUMENTS
METHYL RADICALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PRODUCTION
RADICALS
SILANES
SILICON COMPOUNDS
SILICON IONS
SPECTROMETERS
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKYL RADICALS
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CROSS SECTIONS
DEUTERATION
ENERGY
ENERGY DEPENDENCE
ENERGY RANGE
ETHANE
EV RANGE
EV RANGE 01-10
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
IONS
KINETIC ENERGY
MEASURING INSTRUMENTS
METHYL RADICALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PRODUCTION
RADICALS
SILANES
SILICON COMPOUNDS
SILICON IONS
SPECTROMETERS