title: Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes.
abstract: Treatment of a series of aromatic NHCs (IMes, SIMes, IPr and SIPr) with trimethylaluminium produced their corresponding Lewis acid-base adducts: IMes·AlMe3 (1), SIMes·AlMe3 (2), IPr·AlMe3 (3), and SIPr·AlMe3 (4). These complexes expand the few known examples of saturated NHC stabilised Group 13 complexes. Furthermore, compounds 1-4 show differential stability depending on the nature of the NHC ligand. Analyses of topographic steric maps and NHC %V(Bur) were used to explain these differences. All the compounds have been fully characterised by multinuclear NMR spectroscopy, IR and single crystal X-ray analysis together with computational studies.
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371. Fgarcia@ntu.edu.sg.
authors.forename: Melissa Wu
authors.initials: MW
authors.lastname: M
authors.forename: Arran M
authors.initials: AM
authors.lastname: Gill
authors.forename: Lu
authors.initials: L
authors.lastname: Yunpeng
authors.forename: Laura
authors.initials: L
authors.lastname: Falivene
authors.forename: Li
authors.initials: L
authors.lastname: Yongxin
authors.forename: Rakesh
authors.initials: R
authors.lastname: Ganguly
authors.forename: Luigi
authors.initials: L
authors.lastname: Cavallo
authors.forename: Felipe
authors.initials: F
authors.lastname: García