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Diiodotetrasupersilylcyclotetrasilene (tBu3 Si)4 Si4 I2 -A Molecule Containing an Unsaturated Si4 Ring
Nils Wiberg1, Harald Auer1, Heinrich Nöth1
1Institut für Anorganische Chemie der Universität, Meiserstrasse 1, D-80333 München (Germany), Fax: (+49)-89-5902-578.
Abstract:
The red-orange tetrasilacyclobutene 1 (R*=SitBu3 ) is formed quantitatively by the reaction of tetrasilatetrahedrane 2 and iodine. Surprisingly, water and methanol do not react with 1 with addition to the Si-Si double bond, but instead with replacement of the silicon-bound iodine atoms with oxygen or the methoxy group, respectively. The substitutions possibly proceed by dissociative activation via intermediate 3.
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