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

  • Amy E. Kynman
  • , Samantha Lau
  • , Sean O. Dowd
  • , Tobias Krämer
  • , Adrian B. Chaplin

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The synthesis and organometallic chemistry of rhodium(I) complex [Rh(CNC–Me)(SOMe2)][BArF4], 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)(OSMe2)][BArF4] and [Rh(CNC–Me)(Ph)Cl(OSMe2)][BArF4], 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)(SOMe2)][BArF4].

Original languageEnglish
Pages (from-to)3899-3906
Number of pages8
JournalEuropean Journal of Inorganic Chemistry
Volume2020
Issue number41
DOIs
StatePublished - Nov 8 2020
Externally publishedYes

Keywords

  • Computational analysis
  • DFT calculations
  • Oxidative addition
  • Pincer ligands
  • Rhodium

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