期刊
DALTON TRANSACTIONS
卷 42, 期 35, 页码 12681-12687出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt51005k
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资金
- King Abdullah University of Science and Technology (KAUST) [UK-C0017]
- TGE RMN THC [Fr3050]
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.
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