The Open UniversitySkip to content
 

The reactions of dialkyl and diarylethoxysilanes with T6 silsesquioxane cages X-ray crystallographic studies of the mono-T6D1 and bis-T6D2 insertion ring expansion products

Bassindale , Alan R.; Liu, Zhihua; Parker, David J.; Taylor, Peter; Horton, Peter N.; Hursthouse, Michael B. and Light, Mark E. (2003). The reactions of dialkyl and diarylethoxysilanes with T6 silsesquioxane cages X-ray crystallographic studies of the mono-T6D1 and bis-T6D2 insertion ring expansion products. Journal of Organometallic Chemistry, 687(1) pp. 1–11.

URL: http://dx.doi.org/10.1016/S0022-328X(03)00622-3
Google Scholar: Look up in Google Scholar

Abstract

Successful ring-expanding insertion reactions of T6 silsesquioxane cages using dialkyl and diarylethoxysilanes have been performed to give the first reported mixed T6D1 and T6D2 silsesquioxane cages. The reactions of hexacyclohexylsilsesquioxane (T6) with dialkyl and diaryldiethoxysilanes give predominantly T6D2 bis-insertion compounds while the reaction of T6 with dimethylethoxysilane gives one T6D1mono-insertion product and various T6D2bis-insertion products as isolable components. Three of the ring-expanded products are chiral and it has been shown from their X-ray crystal structures that the pairs of enantiomers, formed as racemic mixtures, co-crystallise together. As well as comparing these structures with related ones in the literature, the possible mechanism of their formation is discussed.

Item Type: Journal Article
Copyright Holders: 2003 Elsevier B.V.
ISSN: 0022-328X
Keywords: alkoxysilane; insertion reaction; ring opening; cage expansion; X-ray study
Academic Unit/Department: Other Departments > Other Departments
Science > Life, Health and Chemical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
eSTEeM
Biomedical Research Network (BRN)
Item ID: 25704
Depositing User: Peter Taylor
Date Deposited: 08 Apr 2011 10:12
Last Modified: 10 Mar 2014 09:27
URI: http://oro.open.ac.uk/id/eprint/25704
Share this page:

Actions (login may be required)

View Item
Report issue / request change

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340   general-enquiries@open.ac.uk