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N‐Heterocyclic Carbene Complexes of Cp*–Aluminum Triflate
Author(s) -
Wang ChenHao,
Lin YaFan,
Tseng HsiChing,
Lee GeneShiang,
Peng ShieMing,
Chiu ChingWen
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800205
Subject(s) - chemistry , nitromethane , imes , carbene , acetonitrile , trifluoromethanesulfonate , ligand (biochemistry) , medicinal chemistry , stereochemistry , catalysis , organic chemistry , biochemistry , receptor
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(C 6 F 5 ) 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 CO 2 .
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