Binobaid, Abeer Abdulrahman, Iglesias, Manuel Alonso, Beetstra, Dirk Johannes, Kariuki, Benson  ORCID: https://orcid.org/0000-0002-8658-3897, Dervisi, Athanasia ORCID: https://orcid.org/0000-0002-0590-5496, Fallis, Ian Andrew ORCID: https://orcid.org/0000-0001-7361-0182 and Cavell, Kingsley John
2009.
Expanded ring and functionalised expanded ring N-heterocyclic carbenes as ligands in catalysis.
Dalton Transactions
(35)
, pp. 7099-7112.
10.1039/b909834h
|
Abstract
The synthesis of new functionalised 6- and 7-membered NHC (N-heterocyclic carbene) precursors bearing anisidyl or pyridine N-substituents, both symmetrically and non-symmetrically substituted is reported. Their corresponding rhodium(I) and iridium(I) complexes, M(COD)(NHC)Cl, were also prepared and characterised. The unusual Rh(III)/Rh(I) salt, [Rh(η2-NHC-py)2Cl2][Rh(COD)Cl2], was obtained with one of the pyridyl-functionalised NHC ligands. Single-crystal X-ray analyses have been obtained for the majority of the complexes and NHC salts. The activity of these complexes was tested in the hydrogenation of a range of substrates with molecular hydrogen, including 1-cyclooctadiene and 2-methyl styrene, where they show enhanced activity and stability in comparison to non-functionalised NHC analogues, operating under exceptionally mild conditions (ambient temperature and atmospheric pressure).
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI) |
| Publisher: | RSC |
| ISSN: | 1477-9226 |
| Last Modified: | 02 Jan 2025 15:42 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/5859 |
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