γ-radiolysis of dialkyl, alkyl-aryl and diaryl sulphones. A volatile product study

Bowmer T.N. and O'Donnell J.H. (1981) γ-radiolysis of dialkyl, alkyl-aryl and diaryl sulphones. A volatile product study. Radiation Physics and Chemistry, 17 3: 177-181. doi:10.1016/0146-5724(81)90269-7


Author Bowmer T.N.
O'Donnell J.H.
Title γ-radiolysis of dialkyl, alkyl-aryl and diaryl sulphones. A volatile product study
Journal name Radiation Physics and Chemistry
ISSN 0146-5724
Publication date 1981-01-01
Sub-type Article (original research)
DOI 10.1016/0146-5724(81)90269-7
Open Access Status
Volume 17
Issue 3
Start page 177
End page 181
Total pages 5
Subject 3108 Radiation
Abstract Dialkyl sulphones, RSO2R, have been considered as model compounds for the radiolysis of poly(olefin sulphone)s, {A figure is presented}. They show preferential C-S scission and SO2 elimination, attribute to the relatively low strengths of these bonds. Combination of the alkyl radicals, which are produced singly or in pairs according to whether one or two C-S scissions occur in one molecule, competes with hydrogen abstraction from sulphone molecules. The latter is favoured for single C-S scissions and as the size of the radical increases and hence its mobility decreases. An important degradation reaction in radiolysis is considered to be ionization to form the cation radical of the dialkyl sulphone, followed by a single C-S scission to produce the alkyl radical and the complementary alkyl sulphonyl cation, which may undergo scission of the remaining C-S bond to produce SO2. GC/MS studies of the volatile products from dimethyl sulphone have shown that radiolysis results in a complexity of fragmentation and combination reactions, involving scission of most bonds in the molecule. The variety of products has been confirmed using CD3SO2CD3. Radiation protection by aromatic substituents has been demonstrated and branched alkyls have been shown to give higher yields of alkanes and SO2 than linear alkyls.
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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