title: Triisobutylaluminum: bulkier and yet more reactive towards silica surfaces than triethyl or trimethylaluminum.
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.
authors.affiliation: Laboratoire de Chimie Organometallique de Surface, CNRS, UMR 5265 C2P2, Universite Lyon 1, CPE Lyon, France.
authors.forename: Anthony
authors.initials: A
authors.lastname: Kermagoret
authors.forename: Rachel Nathaniel
authors.initials: RN
authors.lastname: Kerber
authors.forename: Matthew P
authors.initials: MP
authors.lastname: Conley
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Callens
authors.forename: Pierre
authors.initials: P
authors.lastname: Florian
authors.forename: Dominique
authors.initials: D
authors.lastname: Massiot
authors.forename: Christophe
authors.initials: C
authors.lastname: Copéret
authors.forename: Françoise
authors.initials: F
authors.lastname: Delbecq
authors.forename: Xavier
authors.initials: X
authors.lastname: Rozanska
authors.forename: Philippe
authors.initials: P
authors.lastname: Sautet