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Structural elucidations of T[sub 8] and Q[sub 8] silsesquioxane cages containing two types of pendant group using [sup 29] Si NMR spectroscopy

Bassindale, Alan Richard; Parker, ; Taylor, Peter Geoffrey and Watt, Alison Claire (2003). Structural elucidations of T[sub 8] and Q[sub 8] silsesquioxane cages containing two types of pendant group using [sup 29] Si NMR spectroscopy. Canadian Journal of Chemistry/Revue Canadienne de Chimie, 81(11) pp. 1341–1349.

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DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1139/V03-138
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Abstract

The products from the reaction of octahydrosilsesquioxane (T-8-H) with different molar ratios of phenol and undec-1-ene or methyl 3,3-dimethylpent-4-enoate (MDP) in the presence of chloroplatinic acid have been analysed by Si-29 NMR spectroscopy. The distribution of the two different pendant groups leads to tetrad patterns where the relative chemical peak intensities reflect the selectivity for particular patterns of substitution. As well as analysing the cause of these tetrad patterns we also discuss how the regioselectivity of hydrosilylation can be determined.

Item Type: Journal Article
ISSN: 0008-4042
Keywords: T-8; Q(8); silsesquioxane; Si-29 NMR; hydrosilylation; tetrad pattern; regioselectivity; statistical modelling
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: 6152
Depositing User: Astrid Peterkin
Date Deposited: 05 Jan 2007
Last Modified: 10 Mar 2014 09:27
URI: http://oro.open.ac.uk/id/eprint/6152
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