Electron and thermal dissociation of BF3(g)

Article abstract of DOI:10.1063/1.447368

Electron impact fragmentation studies were performed on the BF3(g) molecule.Appearance potentials for BF2+, BF+, and F+ ions produced in the fragmentation process were 16, 24, and 30 eV, respectively.The appearance potential of BF2+ was found to be only 02 eV greater than the I.P. of BF3(g).The fragmentation ratio of the ionic concentrations at 70 eV for BF3+, BF2+, BF+, and F+ is 10/100/8/3.The primary mechanism for the thermal dissociation of BF3(g) is to the lower borofluorides in nearly equal concentrations.Dissociation to the dimeric borofluorides and F atoms is negligible, with F atom concentrations less than 1 percent of the three borofluorides.Ionization potentials for BF3(g), BF2(g), and BF(g) were 16, 9, and II eV (all +/- 1), respectively.The partial pressures for the isomolecular reaction BF3(g) + BF(g) = 2BF2(g) in the temperature range 1780 to 1900 K yielded a ΔH₂₉₈ of 17.1 +/- 0.5 kcal/mol, resulting in a ΔH₂₉₈ of BF2(g) of -141.0 +/- 0.5 kcal/mol, in good agreement with the photoionization and electron impact values.

Full text of DOI:10.1063/1.447368

Electron and thermal dissociation of BF3(g)
M. Farber and R. D. Srivastava
Citation: The Journal of Chemical Physics 81, 241 (1984); doi: 10.1063/1.447368
View online: http://dx.doi.org/10.1063/1.447368
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/81/1?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.64.99.141 On: Tue, 25 Nov 2014 15:06:11

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.64.99.141 On: Tue, 25 Nov 2014 15:06:11

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.64.99.141 On: Tue, 25 Nov 2014 15:06:11

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.64.99.141 On: Tue, 25 Nov 2014 15:06:11