Author:
Milligan B,Rivett DE,Savige WE
Abstract
Several dialkyl mono-, di-, and
trisulphides have been irradiated in the absence of solvents with ultraviolet
light (2537 Ǻ), with direct sunlight, and with y-rays; the irradiation
products were identified and estimated by gas chromatography. Trisulphides
rapidly gave a mixture of di-, tri-, and tetrasulphides by a disproportionation
reaction initiated by S-S fission. Monosulphides and symmetrical disulphides
were much more stable, although both gave products via C-S fission. The former
yielded the corresponding disulphide and hydrocarbon, while the latter gave
mainly the corresponding tri- and tetrasulphides with traces of mono- sulphides
and hydrocarbons.
Study of these results and those concerned
with disulphide interchange and the dismutation of trisulphides leads to the
conclusion that, if both types of fission are possible in the irradiation of a
simple dialkyl polysulphide, then S-S fission occurs at the expense of C-S
fission.
Cited by
28 articles.
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