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Synthesis of N-heterocyclic carbene palladium(II) bis-phosphine complexes and their decomposition in the presence of aryl halides

Citation

Magill, AM and Yates, BF and Cavell, KJ and Skelton, BW and White, AH, Synthesis of N-heterocyclic carbene palladium(II) bis-phosphine complexes and their decomposition in the presence of aryl halides, Dalton Transactions, 2007, (31) pp. 3398-2406. ISSN 1477-9226 (2007) [Refereed Article]

DOI: doi:10.1039/b706053j

Abstract

Methylpalladium(ii) carbene complexes of the type [Pd(NHC)Me(P-P)]BF 4 (NHC = N-heterocyclic carbene, P-P = chelating phosphine) have been synthesised, the complex [Pd(tmiy)Me(dcype)]BF4 (tmiy = 1,3,4,5-tetramethylimidazol-2-ylidene, dcype = 1,2-bis(dicyclohexylphosphino) ethane) being characterised crystallographically. Complexes bearing the tmiy ligands were shown to decompose in an analogous manner to complexes bearing monodentate phosphine ligands, with the rate of decomposition being nominally linked to the size of the chelate ring. The decomposition of these complexes in the presence of aryl halides - expected to yield Pd(Ar)X(P-P) - was studied and shown instead to yield PdX2(P-P) and [Pd(tmiy)X(P-P)]BF4. Additionally, Pd(Me)X(P-P) and Pd(Ar)X(P-P) were observed in some cases. Intermolecular cross-over reactions between the starting complex and Pd(Ar)X(P-P) were found to be the source of these unexpected products. © The Royal Society of Chemistry 2007.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Other Chemical Sciences
Research Field:Organometallic Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Magill, AM (Miss Alison Magill)
Author:Yates, BF (Professor Brian Yates)
Author:Cavell, KJ (Professor Kingsley Cavell)
ID Code:51079
Year Published:2007
Web of Science® Times Cited:22
Deposited By:Chemistry
Deposited On:2007-08-01
Last Modified:2012-03-05
Downloads:0

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