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Direct ESR Evidence for SH2 Type Reaction of a Methyl Radical with Methylsilane and Methylgermane in a Low Temperature Solid: a Deuterium Labelling Study

Komaguchi, K.; Norberg, D.; Nakazawa, N.; Shiotani, M.; Persson, Petter LU and Lunell, Sten (2005) In Chemical Physics Letters 410(1-3). p.1-5
Abstract
The first ESR spectroscopic evidence of a bimolecular homolytic substitution (SH2) reaction in a 77 K solid phase was presented, where radicals were substituted for the CH3 group of methylsilane and methylgermane (CH3XD3, X = Si, Ge). The radicals were generated by in situ UV-photolysis of CD3I in the solid CH3XD3 in an ESR cavity at 77 K. Using the selectively deuterium labeled compounds, it was demonstrated that the SH2 reaction proceeded over a competitive H atom abstraction reaction with a large H/D isotope effect. Ab initio and density functional theory calculations complement the experimental results.
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
410
issue
1-3
pages
1 - 5
publisher
Elsevier
external identifiers
  • scopus:20444502214
ISSN
0009-2614
DOI
10.1016/j.cplett.2005.04.091
language
English
LU publication?
no
id
2843d88e-c172-433c-b0ad-ce85cc89ca76 (old id 1457763)
date added to LUP
2009-08-31 11:30:51
date last changed
2017-01-01 06:47:05
@article{2843d88e-c172-433c-b0ad-ce85cc89ca76,
  abstract     = {The first ESR spectroscopic evidence of a bimolecular homolytic substitution (SH2) reaction in a 77 K solid phase was presented, where radicals were substituted for the CH3 group of methylsilane and methylgermane (CH3XD3, X = Si, Ge). The radicals were generated by in situ UV-photolysis of CD3I in the solid CH3XD3 in an ESR cavity at 77 K. Using the selectively deuterium labeled compounds, it was demonstrated that the SH2 reaction proceeded over a competitive H atom abstraction reaction with a large H/D isotope effect. Ab initio and density functional theory calculations complement the experimental results.},
  author       = {Komaguchi, K. and Norberg, D. and Nakazawa, N. and Shiotani, M. and Persson, Petter and Lunell, Sten},
  issn         = {0009-2614},
  language     = {eng},
  number       = {1-3},
  pages        = {1--5},
  publisher    = {Elsevier},
  series       = {Chemical Physics Letters},
  title        = {Direct ESR Evidence for SH2 Type Reaction of a Methyl Radical with Methylsilane and Methylgermane in a Low Temperature Solid: a Deuterium Labelling Study},
  url          = {http://dx.doi.org/10.1016/j.cplett.2005.04.091},
  volume       = {410},
  year         = {2005},
}