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- W1577840827 abstract "The cyclic hexasilane (Me2Si)6 (1) and the linear polymeric (Me2Si)x react with elemental sulphur at 190–200°C much slowly than (Me2Si)5. Reaction of 1 gives initially the insertion product (Me2Si)6S, and hence (Me2Si)5S, (Me2Si)4S2, and finally hexamethyl-1,3-dithiacyclopentasilane, (Me2SiS)3, and (Me2SiS)2. These last three products are also formed in the reaction of sulphur with the linear polymer. The mechanism of sulphur insertion into the polysilane molecule is discussed; and it is suggested that the polysilane acts as a nucleophile so that its reactivity is related principally to its electron-donating ability. A pathyway involving several sulphur insertions and dimethylsilanethione elimination is proposed. The reaction provides a convinient method for preparation of the cyclic species (Me2SiS)2 with n = 2 or 3." @default.
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- W1577840827 date "1988-06-01" @default.
- W1577840827 modified "2023-09-25" @default.
- W1577840827 title "Contributions to the chemistry of silicon-sulphur compounds" @default.
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- W1577840827 doi "https://doi.org/10.1016/0022-328x(88)80128-1" @default.
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