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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.
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author
; ; ; ; and
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
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
2843d88e-c172-433c-b0ad-ce85cc89ca76 (old id 1457763)
date added to LUP
2016-04-01 15:48:01
date last changed
2022-03-14 20:04:49
@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}},
  doi          = {{10.1016/j.cplett.2005.04.091}},
  volume       = {{410}},
  year         = {{2005}},
}