Strongly Coordinating Ligands To Form Weakly Coordinating Yet Functional Organometallic Anions
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Scholar |
Otros documentos de la autoría: Fisher, Steven; McArthur, Scott G.; Tej, Varun; Lee, Sarah E.; Chan, Allen L.; Banda, Isaac; Gregory, Aaron; Berkley, Kevin; Tsay, Charlene; Rheingold, Arnold L.; Guisado-Barrios, Gregorio; Lavallo, Vincent
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https://pubs.acs.org/doi/10.1021/jacs.9b10234. |
Metadatos
Título
Strongly Coordinating Ligands To Form Weakly Coordinating Yet Functional Organometallic AnionsAutoría
Fecha de publicación
2019-12-05Editor
American Chemical SocietyCita bibliográfica
FISHER, Steven P., et al. Strongly Coordinating Ligands To Form Weakly Coordinating Yet Functional Organometallic Anions. Journal of the American Chemical Society, 2019, vol. 142, no 1, p. 251-256.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/abs/10.1021/jacs.9b10234Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Weakly coordinating anions (WCAs) are generally tailored to act as spectators with little or no function. Here we describe the implementation of strongly coordinating dianionic carboranyl N-heterocyclic carbenes (NHCs) ... [+]
Weakly coordinating anions (WCAs) are generally tailored to act as spectators with little or no function. Here we describe the implementation of strongly coordinating dianionic carboranyl N-heterocyclic carbenes (NHCs) to create organometallic -ate complexes of Au(I) that serve both as WCAs and functional catalysts. These organometallic WCAs can be utilized to form both heterobimetallic (Au(I)−/Ag(I)+; Au(I)−/Ir(I)+) and organometallic/main group ion pairs (Au(I)−/(CPh3+ or SiEt3+). Because parent unfunctionalized dianionic carboranyl NHC complex 3 is unstable in most solvents when paired with CPh3+, novel synthesis methodology was devised to create polyhalogenated carboranyl NHCs, which show superior stability toward electrophilic substitution and cyclometalation chemistry. Additionally, the WCAs containing polyhalogenated carboranyl NHCs are among the most active catalysts reported for the hydroamination of alkynes. This investigation has also produced the first examples of a low-coordinate Au(III) center with two cis accessible coordination sites and the first true dianionic carbene. These studies pave the way for the design of functional ion pairs that have the potential to participate in tandem or cooperative small-molecule activation and catalysis. [-]
Proyecto de investigación
National Science Foundation (CHE1455348 and MRICHE-1626673) ; MINECO (CAS16/00128) ; MICIU/AEI/FEDER “Una manera de hacer Europa” (RTI2018-098903-J-I00).Derechos de acceso
Copyright © 2019 American Chemical Society
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