dc.contributor.author | Lund, Jostein Johannes | |
dc.contributor.author | Jonsson, Helgi Freyr | |
dc.contributor.author | Fiksdahl, Anne | |
dc.date.accessioned | 2023-03-06T13:38:03Z | |
dc.date.available | 2023-03-06T13:38:03Z | |
dc.date.created | 2022-10-10T19:12:37Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Results in Chemistry. 2022, 4 . | en_US |
dc.identifier.uri | https://hdl.handle.net/11250/3056113 | |
dc.description.abstract | Au(III)-NHC-oxazolyl complexes are prepared by oxidation and anion exchange of the corresponding Au(I)Cl-NHC-oxazolyl precursors, which are synthesized from appropriate imidazolium pre-ligands. As the Au(III) complexes are too unstable for proper isolation and spectroscopic characterization, selective 15N NMR techniques provide valuable knowledge of N-coordination to gold by formation of N-ligated Au(III) complexes. The changes in 15N-shift values (Δδ15N), observed by 1H,15N-HMBC 2D NMR studies, going from Au(I)Cl, via Au(III)Cl3 to the C,N-Au(III) NHC-oxazolyl complexes, afford important information of the oxidation and the anion exchange processes. In particular, the huge up-field shift of the oxazoline-N by anion exchange (Δδ15NAE: −71.3 ppm), represents significant evidence that oxazoline-N-coordination to Au(III) takes place by anion exchange, and, hence, that the target six-membered bidentate C,N-Au(III)-NHC-oxazoline chelated complex is formed. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier B. V. | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | In situ detection of an unstable C,N-Au(III) chelate by 15N NMR methods | en_US |
dc.title.alternative | In situ detection of an unstable C,N-Au(III) chelate by 15N NMR methods | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 0 | en_US |
dc.source.volume | 4 | en_US |
dc.source.journal | Results in Chemistry | en_US |
dc.identifier.doi | 10.1016/j.rechem.2022.100360 | |
dc.identifier.cristin | 2060214 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |