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

Anthony Kermagoret, Rachel Nathaniel Kerber, Matthew P. Conley, Emmanuel Callens, Pierre Florian, Dominique Massiot, Christophe Copéret, Françoise Delbecq, Xavier Rozanska, Philippe Sautet

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

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. © 2013 The Royal Society of Chemistry.
Original languageEnglish (US)
Pages (from-to)12681
JournalDalton Transactions
Volume42
Issue number35
DOIs
StatePublished - 2013
Externally publishedYes

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