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- W4211084016 startingPage "1" @default.
- W4211084016 abstract "This chapter outlines the preparation, properties, structures, and reactions of silyl anions. Peralkylsilyl anions having no aromatic substituents cannot be prepared by reaction of the corresponding chlorosilane or disilane with alkali metal. The action of alkali metals on chlorosilane gives not only silyllithium but also disilane as coupling product, because cleavage of the Si–Si bond of peralkyldisilane does not occur with alkali metals. The alkali metal hydrides NaH and KH are also effective as metalating reagents for hydrosilane and disilane to give trialkylsilyl anions in an aprotic solvent such as THF, DME, or HMPA. Action of lithium metal on linear phenyloligosilanes gives rise to the Si–Si bond cleavage with no regioselectivity to yield a mixture of various mono- and oligosilanyllithiums. An electron transfer from lithium to the tetrasilane gives the corresponding radical anion, which decomposes unimolecularly to radicals and anions. The radicals may recombine to form oligosilanes or may take a second electron from lithium to form anions. The anions also directly attack any remaining disilanyl chloride to produce linear oligosilanes." @default.
- W4211084016 created "2022-02-13" @default.
- W4211084016 creator A5025728444 @default.
- W4211084016 creator A5033239179 @default.
- W4211084016 date "1995-01-01" @default.
- W4211084016 modified "2023-10-16" @default.
- W4211084016 title "Silyl Anions" @default.
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