Silicon Chalcogenide Cage Compounds: New Structures Derived from the Bicyclic Silicon(I) Ring Compound Si 4 {N(SiMe 3 )Mes} 4

The bicyclic silicon(I) ring compound Si {N(SiMe )Mes} (2) was used as starting material in reactions with chalcogens and chalcogen transfer agents at low temperatures. This resulted in the selective formation of new cage compounds. With Me NO, a silicon oxide with adamantane-type cage 3 was isolate...

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Published in:Chemistry : a European journal 2024-01, Vol.30 (5), p.e202302766
Main Authors: Quest, Michael, Hepp, Alexander, Daniliuc, C G, Lips, Felicitas
Format: Article
Language:English
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Summary:The bicyclic silicon(I) ring compound Si {N(SiMe )Mes} (2) was used as starting material in reactions with chalcogens and chalcogen transfer agents at low temperatures. This resulted in the selective formation of new cage compounds. With Me NO, a silicon oxide with adamantane-type cage 3 was isolated that represents the first isolated T silsesquioxane. Reactions with propylenesulfide and red selenium gave direct access to defect heterocubane-type cages 4 and 5 with three Si-Si bonds wherein the silicon atoms adopt different low oxidation states of +I and +III. A reaction with elemental tellurium even occurs below room temperature to provide ditelluro-tetrasila-tricyclohexane 6.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.202302766