Oxidative Addition of Biphenylene and Chlorobenzene to a Rh(CNC) Complex

The synthesis and organometallic chemistry of rhodium(I) complex [Rh(CNC–Me)(SOMe(2))][BAr(F) (4)], featuring NHC‐based pincer and labile dimethyl sulfoxide ligands, is reported. This complex reacts with biphenylene and chlorobenzene to afford products resulting from selective C–C and C–Cl bond acti...

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Detalles Bibliográficos
Autores principales: Kynman, Amy E., Lau, Samantha, Dowd, Sean O., Krämer, Tobias, Chaplin, Adrian B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Full Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7702176/
https://www.ncbi.nlm.nih.gov/pubmed/33328794
http://dx.doi.org/10.1002/ejic.202000780
Descripción
Sumario:The synthesis and organometallic chemistry of rhodium(I) complex [Rh(CNC–Me)(SOMe(2))][BAr(F) (4)], featuring NHC‐based pincer and labile dimethyl sulfoxide ligands, is reported. This complex reacts with biphenylene and chlorobenzene to afford products resulting from selective C–C and C–Cl bond activation, [Rh(CNC–Me)(2,2'‐biphenyl)(OSMe(2))][BAr(F) (4)] and [Rh(CNC–Me)(Ph)Cl(OSMe(2))][BAr(F) (4)], respectively. A detailed DFT‐based computational analysis indicates that C–H bond oxidative addition of these substrates is kinetically competitive, but in all cases endergonic: contrasting the large thermodynamic driving force calculated for insertion of the metal into the C–C and C–Cl bonds, respectively. Under equivalent conditions the substrates are not activated by the phosphine‐based pincer complex [Rh(PNP‐iPr)(SOMe(2))][BAr(F) (4)].

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