✦ LIBER ✦

Dynamic NMR study of tri-tert-butylcarbinol and of a carbinol–methylaluminoxane mixture

✍ Scribed by Tuulamari Helaja; Kimmo Hakala; Juho Helaja; Barbro Löfgren; Tapio Hase

Book ID: 101253748
Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 184 KB
Volume: 38
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(200003)38:3<165::aid-mrc615>3.0.co;2-e

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✦ Synopsis

The reaction of tri-tert-butylcarbinol and oligomeric methylaluminoxane (MAO) prepared in toluened 8 was studied by analysing the reaction mixture utilizing ROESY, HSQC and HMBC 2D NMR experiments. The formation of one main alkoxide was observed in the reaction. Dynamic 13 C NMR and semiempirical PM3 molecular modelling were used in concert to study the tert-butyl group rotation barriers of this alkoxide. From several modelled acyclic and cyclic MAO fragments, an open chain -Al(Me)OAl(Me)-fragment was observed to be consistent with the NMR results.

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