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Dissociative electron attachment reactions of transition metal carbonyls and their apparent influence on the thermalization of electrons by CO2

George, Patricia M. and Beauchamp, J. L. (1982) Dissociative electron attachment reactions of transition metal carbonyls and their apparent influence on the thermalization of electrons by CO2. Journal of Chemical Physics, 76 (6). pp. 2959-2964. ISSN 0021-9606. http://resolver.caltech.edu/CaltechAUTHORS:GEOjcp82

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Abstract

Dissociative electron attachment rates are measured for the transition metal carbonyls V(CO)6, Cr(CO)6, Fe(CO)5, Ni(CO)4, Mo(CO)6, and W(CO)6. Rates are measured as a function of the pressure of CO2 added to relax epithermal electrons. Derived thermal rate constants for the formation of M(CO)-n-1 from M(CO)n are 0.6, 3.0, 2.0, 2.0, 1.3, and 1.2×10^−7 cm3 molecule−1 s−1, respectively. The differences in these rate constants may be attributed to the different stabilities of the molecular anion with regard to dissociation versus autodetachment. The measured rate of thermalization of electrons by CO2 varies with the metal carbonyl used and depends on the variation of the dissociative electron capture cross section with electron energy. Each system is thus tightly coupled in that the electron energy distribution is determined not only by collisional processes involving CO2 but varies as well with the energy dependent depletion of the distribution by reactant species.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.443389DOIArticle
http://link.aip.org/link/?JCPSA6/76/2959/1PublisherArticle
ORCID:
AuthorORCID
Beauchamp, J. L.0000-0001-8839-4822
Additional Information:© 1982 American Institute of Physics. Received 20 March 1981; accepted 30 March 1981. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 6390.
Subject Keywords:ELECTRON ATTACHMENT, VANADIUM COMPOUNDS, CHROMIUM COMPOUNDS, IRON COMPOUNDS, NICKEL COMPOUND, MOLYBEDENUM COMPOUNDS, TUNGSTEN COMPOUNDS, CHEMICAL REACTION KINETICS, DISSOCIATION, CARBONYLS, THERMALIZATION, ELECTRONS, CARBON DIOXIDE, ELECTRON CAPTURE
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Arthur Amos Noyes Laboratory of Chemical Physics6390
Record Number:CaltechAUTHORS:GEOjcp82
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GEOjcp82
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11444
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:28 Aug 2008 04:33
Last Modified:06 Sep 2017 23:10

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