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dc.contributor.author
Baquero, Edwin A.
dc.contributor.author
Silbestri, Gustavo Fabián
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dc.contributor.author
Gómez Sal, Pilar
dc.contributor.author
Flores, Juan C.
dc.contributor.author
de Jesús, Ernesto
dc.date.available
2016-04-28T15:07:30Z
dc.date.issued
2013-04
dc.identifier.citation
Baquero, Edwin A.; Silbestri, Gustavo Fabián; Gómez Sal, Pilar; Flores, Juan C.; de Jesús, Ernesto; Sulfonated Water-soluble N-Heterocyclic Carbene Silver(I) Complexes: Behavior in Aqueous Medium and as NHC-transfer Agents to Platinum(II); American Chemical Society; Organometallics; 32; 9; 4-2013; 2814-2826
dc.identifier.issn
0276-7333
dc.identifier.uri
http://hdl.handle.net/11336/5421
dc.description.abstract
This report describes the synthesis of water-soluble silver(I) and platinum(II) complexes bearing sulfonated mono- or dianionic N-heterocyclic carbene ligands. Thus, treatment of the corresponding zwitterionic imidazolium derivative with silver(I) oxide in water afforded the light-sensitive bis(carbene) complexes Ag[Ag- (NHC)2] (2Ag+), which were transformed into the stable salts Na[Ag(NHC)2] (2) by addition of sodium chloride. In contrast, the same reaction in dmso afforded mono(carbenes) of general formula Na[AgCl(NHC)] (3). The solvent-dependence of the reaction product can be rationalized on the basis of the equilibrium [AgCl2]- --> AgCl + Cl-. The precipitation of silver chloride is more favored in protic solvents than in aprotic solvents such as dmso, thus explaining the formation of bis(carbenes) in water. The formation of silver chloride may also promote the hydrolysis of silver NHC complexes under some conditions. The water-soluble platinum(II) complexes Na[PtCl2(dmso)(NHC)] were synthesized by using either mono(carbene) silver complexes 3 as carbene-transfer agents or by direct metalation of the imidazolium salt with cis- [PtCl2(dmso)2] in the presence of NaHCO3 as base. The (NHC)Pt(II) complexes were tested as catalysts for the hydration of alkynes in the aqueous phase and found to be active in neat water without the need for acidic cocatalysts.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nhc-Silver(I)
dc.subject
Nhc-Pt(Ii)
dc.subject
Sulfonated Nhc
dc.subject.classification
Química Inorgánica y Nuclear
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Sulfonated Water-soluble N-Heterocyclic Carbene Silver(I) Complexes: Behavior in Aqueous Medium and as NHC-transfer Agents to Platinum(II)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-06 15:52:43.262787-03
dc.journal.volume
32
dc.journal.number
9
dc.journal.pagination
2814-2826
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Baquero, Edwin A.. Universidad de Alcala. Facultad de Ciencias; España
dc.description.fil
Fil: Silbestri, Gustavo Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto de Química del Sur; Argentina. Universidad de Alcala; España
dc.description.fil
Fil: Gómez Sal, Pilar. Universidad de Alcala. Facultad de Ciencias; España
dc.description.fil
Fil: Flores, Juan C.. Universidad de Alcala. Facultad de Ciencias; España
dc.description.fil
Fil: de Jesús, Ernesto. Universidad de Alcala. Facultad de Ciencias; España
dc.journal.title
Organometallics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/om400228s
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1021/om400228s
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/om400228s
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