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Reaction of CF3 radicals with group IV tetramethyls

✍ Scribed by T. N. Bell; A. E. Platt

Publisher: John Wiley and Sons
Year: 1970
Tongue: English
Weight: 473 KB
Volume: 2
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550020405

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✦ Synopsis

Abstract

Arrhenius parameters have been measured for the abstraction of hydrogen from the C Si, Ge, and Sn tetramethyls:
The rate constants correlate with the proton chemical shift, which is related to a polar effect. In all cases except carbon, a hot‐molecule β‐fluorine rearrangement‐elimination reaction occurs following radical combination:
We suggest the occurrence of a radical exchange reaction for the Si, Sn, and Ge systems,
with k~exchange~ (CF~3~ + Sn(Me)~4~) ∼ 10^7^ ml m^−1^ s^−1^.

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