English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/111211
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

DC FieldValueLanguage
dc.contributor.authorMartínez-Salvador, Sonia-
dc.contributor.authorFalvello, Larry R.-
dc.contributor.authorMartín, Antonio-
dc.contributor.authorMenjón, Babil-
dc.date.accessioned2015-02-25T09:25:49Z-
dc.date.available2015-02-25T09:25:49Z-
dc.date.issued2013-
dc.identifierdoi: 10.1002/chem.201302142-
dc.identifierissn: 0947-6539-
dc.identifiere-issn: 1521-3765-
dc.identifier.citationChemistry - A European Journal 19(43): 14540-14552 (2013)-
dc.identifier.urihttp://hdl.handle.net/10261/111211-
dc.description.abstractTrifluoromethylation of AuCl3 by using the Me 3SiCF3/CsF system in THF and in the presence of [PPh 4]Br proceeds with partial reduction, yielding a mixture of [PPh 4][AuI(CF3)2] (1′) and [PPh4][AuIII(CF3)4] (2′) that can be adequately separated. An efficient method for the high-yield synthesis of 1′ is also described. The molecular geometries of the homoleptic anions [AuI(CF3)2]- and [Au III(CF3)4]- in their salts 1′ and [NBu4][AuIII(CF3)4] (2) have been established by X-ray diffraction methods. Compound 1′ oxidatively adds halogens, X2, furnishing [PPh4][Au III(CF3)2X2] (X=Cl (3), Br (4), I (5)), which are assigned a trans stereochemistry. Attempts to activate C-F bonds in the gold(III) derivative 2′ by reaction with Lewis acids under different conditions either failed or only gave complex mixtures. On the other hand, treatment of the gold(I) derivative 1′ with BF3× OEt2 under mild conditions cleanly afforded the carbonyl derivative [AuI(CF3)(CO)] (6), which can be isolated as an extremely moisture-sensitive light yellow crystalline solid. In the solid state, each linear F3C-Au-CO molecule weakly interacts with three symmetry-related neighbors yielding an extended 3D network of aurophilic interactions (Au⋯Au=345.9(1)pm). The high \tilde \nu CO value (2194cm-1 in the solid state and 2180cm-1 in CH 2Cl2 solution) denotes that CO is acting as a mainly σ-donor ligand and confirms the role of the CF3 group as an electron-withdrawing ligand in organometallic chemistry. Compound 6 can be considered as a convenient synthon of the >AuI(CF 3)> fragment, as it reacts with a number of neutral ligands L, giving rise to the corresponding [AuI(CF3)(L)] compounds (L=CNtBu (7), NCMe (8), py (9), tht (10)). Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.-
dc.description.sponsorshipThis work was supported by the Spanish MICINN (DGPTC)/FEDER (Project CTQ2008-06669-C02-01/BQU), MINECO/FEDER (Project CTQ2012-35251) and the Gobierno de Aragón (Grupo Consolidado E21: Química Inorgánica y de los Compuestos Organometálicos).-
dc.publisherWiley-VCH-
dc.rightsclosedAccess-
dc.subjectFluorinated compounds-
dc.subjectC-F activation-
dc.subjectMetal carbonyl derivatives-
dc.subjectOrganogold compounds-
dc.subjectAurophilicity-
dc.subjectGold-
dc.titleGold(I) and Gold(III) trifluoromethyl derivatives-
dc.typeartículo-
dc.identifier.doi10.1002/chem.201302142-
dc.date.updated2015-02-25T09:25:50Z-
dc.description.versionPeer Reviewed-
dc.language.rfc3066eng-
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderGobierno de Aragón-
dc.contributor.funderEuropean Commission-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004837es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100010067es_ES
Appears in Collections:(ISQCH) Artículos
(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show simple item record
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.