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Correlation of Ligand Donicity with Catalytic Activity in a Series of Gold (I) Carbene and Phosphine Complexes

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dc.contributor.author Mathota Arachchige, Y.L.N.
dc.contributor.author Slaughter, L.M.
dc.date.accessioned 2015-12-16T08:39:46Z
dc.date.available 2015-12-16T08:39:46Z
dc.date.issued 2015
dc.identifier.citation Mathota Arachchige, Y.L.N. and Slaughter, L.M. (2015). Correlation of Ligand Donicity with Catalytic Activity in a Series of Gold (I) Carbene and Phosphine Complexes. In: Research Forum E Proceeding, Staff Development Centre Research Forum, Cycle 14-2015, University of Kelaniya, Kelaniya, pp 17.
dc.identifier.issn 2448-9743
dc.identifier.uri
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/10829
dc.description.abstract Catalytic activities of transition metal complexes are influenced by both steric and electronic effects arising from ancillary ligands. In the case of linear gold (I) complexes, the available evidence suggests that ligand electronic effects are more important. However, available methods to investigate the donor abilities of ligands are not easily conducted with gold (I) complexes. In this study, the donor abilities of selected carbene ligands, including N-heterocyclic carbenes (NHCs), abnormal N-heterocyclic carbenes (aNHCs), and acyclic diaminocarbenes (ADCs), as well as phosphine ligands, at a gold (I) center were studied. Methyl isocyanide adducts and 1,3- diisopropylbenzimidazolin-2-ylidene (i Pr2-bimy) adducts of a series of gold complexes were synthesized as IR probes and 13C NMR probes, respectively. The gold-catalyzed intramolecular cyclization of alkynes, which is known to be accelerated by strong donor ligands, showed an inverse relationship between the Δν of the MeNC IR probe and the reaction rate. The same trend was observed with the 13C NMR probe, but the MeNC IR probes gave a better correlation with catalytic rates. Explanations of the observed donicity trends in terms of bonding effects will be discussed. en_US
dc.language.iso en en_US
dc.publisher Staff Development Center, University of Kelaniya en_US
dc.subject Catalytic Activity en_US
dc.subject Gold (I) Carbene en_US
dc.subject Phosphine Complexes en_US
dc.title Correlation of Ligand Donicity with Catalytic Activity in a Series of Gold (I) Carbene and Phosphine Complexes en_US
dc.type Article en_US


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