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Issue 35, 2013
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Triisobutylaluminum: bulkier and yet more reactive towards silica surfaces than triethyl or trimethylaluminum

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Abstract

Triisobutylaluminum reacts with silica yielding three different Al sites according to high-field aluminum-27 NMR and first principle calculations: a quadruply grafted dimeric surface species and two incorporated Al(O)x species (x = 4 or 5). This result is in stark contrast to the bis-grafted species that forms during Et3Al silica grafting. Thus the isobutyl ligands, which render R3Al monomeric, lead to greater reactivity towards the silica surface.

Graphical abstract: Triisobutylaluminum: bulkier and yet more reactive towards silica surfaces than triethyl or trimethylaluminum

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Article information


Submitted
16 Apr 2013
Accepted
29 Apr 2013
First published
29 Apr 2013

Dalton Trans., 2013,42, 12681-12687
Article type
Paper

Triisobutylaluminum: bulkier and yet more reactive towards silica surfaces than triethyl or trimethylaluminum

A. Kermagoret, R. N. Kerber, M. P. Conley, E. Callens, P. Florian, D. Massiot, C. Copéret, F. Delbecq, X. Rozanska and P. Sautet, Dalton Trans., 2013, 42, 12681
DOI: 10.1039/C3DT51005K

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