Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes. Issue 34 (27th February 2015)

• Record Type: Journal Article
• Authors: Wu. M, Melissa; Gill, Arran M.; Yunpeng, Lu; Falivene, Laura; Yongxin, Li; Ganguly, Rakesh; Cavallo, Luigi; García, Felipe
• Is Part Of: Dalton transactions. Volume 44:Issue 34(2015)
• Page Start: 15166
• Page End: 15174
• Publication Date: 2015-02-27
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt00079c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Treatment of a series of aromatic NHCs with trimethylaluminium produced their corresponding NHC·AlMe3 adducts displaying different stabilities. Their stabilities are rationalized using topographic steric maps and NHC % V Bur. 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, compounds1–4 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.