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.

DOI: https://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.

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• Item ORO ID
• 6152
• Item Type
• Journal Item
• ISSN
• 0008-4042
• Keywords
• T-8; Q(8); silsesquioxane; Si-29 NMR; hydrosilylation; tetrad pattern; regioselectivity; statistical modelling
• Academic Unit or School
• Other Departments > Vice-Chancellor's Office
  Other Departments
  Faculty of Science, Technology, Engineering and Mathematics (STEM) > Life, Health and Chemical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Depositing User
• Astrid Peterkin