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Oxygen and Water Additions to a Tetrasilabuta-1,3-diene

✍ Scribed by Stefan Willms; Andreas Grybat; Wolfgang Saak; Manfred Weidenbruch; Heinrich Marsmann

Publisher
John Wiley and Sons
Year
2000
Tongue
German
Weight
137 KB
Volume
626
Category
Article
ISSN
0372-7874

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✦ Synopsis

The reaction of hexakis(2,4,6-triisopropylphenyl)tetrasilabuta-1,3-diene R 2 Si=SiR±SiR=SiR 2 (1) with atmospheric oxygen furnishes the oxidation product R 2 Si(O) 2 SiROSiR(O) 2 SiR 2 (5) by oxygen insertion into all Si±Si bonds. However, treatment of 1 with meta-chloroperoxobenzoic acid provides R 2 Si(O) 2 SiR±SiR(O) 2 SiR 2 (7) with retention of the Si±Si single bond. Reaction of 1 with traces of water gives the oxatetrasilacyclopentane derivative 10 analogous to THF. With excess water a tetrasilane-1,4-diol is formed. The structures of 5, 7, and 10 were determined by X-ray crystallography.

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