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Title: Stabilisation of iridium(III) fluoride complexes with NHCs.
Authors: Fawcett, J
Harding, DA
Hope, EG
Singh, K
Solan, GA
First Published: 28-Nov-2010
Citation: DALTON TRANS, 2010, 39 (44), pp. 10781-10789
Abstract: The first neutral, [IrClF(2)(NHC)(COD)] and [IrClF(2)(CO)(2)(NHC)] (NHC = IMes, IPr), and cationic, [IrF(2)py(IMes)(COD)][BF(4)] and [IrF(2)L(CO)(2)(NHC)][BF(4)] (NHC = IMes, L = PPh(2)Et, PPh(2)CCPh, py; NHC = IPr, L = py), NHC iridium(III) fluoride complexes, have been synthesised by the xenon difluoride oxidation of iridium(I) substrates. The stereochemistries of these iridium(III) complexes have been confirmed by multinuclear NMR spectroscopy in solution and no examples of fluoride-trans-NHC arrangements were observed. Throughout, CO was found to be a better co-ligand for the stabilisation of the iridium(III) fluoride complexes than COD. Attempts to generate neutral trifluoroiridium(III) complexes, [IrF(3)(CO)(NHC)], via the ligand substitution reaction of [IrF(3)(CO)(3)] with the free NHCs were unsuccessful.
DOI Link: 10.1039/c0dt00857e
eISSN: 1477-9234
Type: Journal Article
Appears in Collections:Published Articles, Dept. of Chemistry

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