Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes

Melissa Wu. M; Arran M. Gill; Lu Yunpeng; Laura Falivene; Li Yongxin; Rakesh Ganguly; Luigi Cavallo; Felipe García

doi:10.1039/c5dt00079c

Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes

Melissa Wu. M, Arran M. Gill, Lu Yunpeng, Laura Falivene, Li Yongxin, Rakesh Ganguly, Luigi Cavallo, Felipe García^*

^*Corresponding author for this work

Physical Sciences and Engineering

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19 Scopus citations

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.

Original language	English (US)
Pages (from-to)	15166-15174
Number of pages	9
Journal	Dalton transactions
Volume	44
Issue number	34
DOIs	https://doi.org/10.1039/c5dt00079c
State	Published - Feb 13 2015

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Publisher Copyright:
© The Royal Society of Chemistry 2015.

ASJC Scopus subject areas

Inorganic Chemistry

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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 %VBur 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.",

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AU - Wu. M, Melissa

AU - Gill, Arran M.

AU - Yunpeng, Lu

AU - Falivene, Laura

AU - Yongxin, Li

AU - Ganguly, Rakesh

AU - Cavallo, Luigi

AU - García, Felipe

PY - 2015/2/13

Y1 - 2015/2/13

N2 - 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 %VBur 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.

AB - 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 %VBur 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.

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Synthesis, structural studies and ligand influence on the stability of aryl-NHC stabilised trimethylaluminium complexes

Abstract

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