N-Heterocyclic Carbene Complexes of Cp*–Aluminum Triflate
Journal
European Journal of Inorganic Chemistry
Journal Volume
2018
Journal Issue
20
Pages
2232-2236
Date Issued
2018
Author(s)
Abstract
To prepare the half-metallocene complex of aluminum strong σ-donating NHC ligands were allowed to react with [Cp*Al(OTf)2]2 to afford the corresponding Cp*Al(NHC)(OTf)2 compound (3). The neutral Al complexes turned out to be more acidic than B(C6F5)3 on the Gutmann–Beckett scale and highly reactive towards chloroform, acetonitrile and nitromethane. With the unsaturated IMes ligand, the nitromethane insertion complex occurred via carboalumination of Cp*–Al across the N=O bond was obtained and structurally characterized. Similar addition product could also be observed in the reaction of Cp*Al(IMes)(OTf)2 with CO2.
Type
journal article