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Summary: FULL PAPER
The Syntheses and Molecular Structure of a Branched Oligosilyl Anion with a
Record of Nine Silicon Atoms and of the First Branched Oligosilyl Dianion
Yitzhak Apeloig,*[a]
Gady Korogodsky,[a]
Dmitry Bravo-Zhivotovskii,*[a]
Dieter Bläser,[b]
and
Roland Boese[b]
Keywords: Silicon / Silyl anions / Lithium / Silanes / Polysilyl dianions / ,-Dilithiooligosilanes
(Me3Si)3Si(Me2Si)2(Me3Si)2SiLi (1) and LiSi(Me3Si)2(Me2Si)2-
Si(Me3Si)2Li (2) were synthesized by the reaction of (Me3Si)3-
Si(Me2Si)2Si(Me3Si)3 in THF with one or two mol-equiva-
Introduction
Silyl anions are potentially important reagents in syn-
thesis[1]
and they are probably involved in the formation
and degradation of polysilanes.[2]
However, the number and
variety of synthetically useful silyl anions and the informa-
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