Bassindale, Alan R.; Chen, Huiping; Liu, Zhihua; MacKinnon, Iain A.; Parker, David J.; Taylor, Peter G.; Yang, Yuxing; Light, Mark E.; Horton, Peter N. and Hursthouse, Michael B.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1016/j.jorganchem.2004.06.063|
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The recently-reported reaction of triethoxysilanes with tetrabutylammonium fluoride in the presence of scarce water provides a higher yielding route to substituted octasilsesquioxane cages. Further cages have now been prepared in good yield using this route and their X ray crystal structures demonstrate that their cage geometries in the solid state are very similar with the packing constraints of the crystal lattices appearing to have the greatest influence on the geometry of the cage core. The mechanism of the reaction has been examined and the proposed mechanism of cage formation validated, though its exclusivity has not been categorically proven. By careful choice of reaction conditions, dramatic increases in rate and yield have been demonstrated.
|Item Type:||Journal Article|
|Copyright Holders:||2004 Elsevier B.V.|
|Keywords:||T8 silsequioxane cage; Alkoxysilane; X-ray study; Mechanism|
|Academic Unit/Department:||Other Departments > Vice-Chancellor's Office
Science > Life, Health and Chemical Sciences
|Interdisciplinary Research Centre:||Biomedical Research Network (BRN)
Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
|Depositing User:||Peter Taylor|
|Date Deposited:||04 Jul 2006|
|Last Modified:||24 Nov 2014 12:13|
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