Reversible Intramolecular Alkyl C-H Bond Activation, Alcohol Dehydrogenation, and Trans-Cis Dihydride Isomerization in Ruthenium N-Heterocyclic Carbene Complexes

Suzanne Burling, Mary F Mahon, Belinda M Paine, Michael K Whittlesey, Jonathan M J Williams

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Thermolysis of Ru(IEt2Me2)(PPh3)2(CO)H2 (1) (IEt2Me2 = 1,3-bis(ethyl)-4,5-dimethylimidazol-2-ylidene) in the presence of CH2:CHSiMe3 resulted in C-H activation of an NCH2CH2-H bond, loss of the proton, and metalation giving Ru(IEt2Me2)'(PPh3)2(CO)H2 (2). The process can be reversed by H2 and alcs. giving different isomers of the starting dihydride complex 1. The crystal structure of 1, where the IEt2Me2 ligand is trans to the hydride, is presented as well as the structure of complex 2.
Original languageEnglish
Pages (from-to)4537-4539
Number of pages3
JournalOrganometallics
Volume23
Issue number20
Publication statusPublished - 2004

Keywords

  • reversible intramol. alkyl C-H bond activation
  • carbon hydrogen bond activation cleavage diethylimidazolylidene ruthenium complex
  • mol structure ruthenium diethylimidazolylidene phosphine carbonyl hydride complex
  • Thermal decomposition (prepn.
  • Crystal structure
  • cis-trans dihydride isomerization
  • activation
  • alc. dehydrogenation
  • RACT (Reactant or reagent) (ruthenium
  • isomerization cis trans ruthenium imidazolylidene dihydride carbonyl phosphine complex
  • PRP (Properties)
  • RCT (Reactant)
  • PREP (Preparation)
  • Molecular structure (of ruthenium diethyldimethylimidazolylidene phosphine carbonyl dihydride complexes)
  • Bond cleavage (carbon-hydrogen
  • prepn.
  • dehydrogenation alc ruthenium dihydride carbene complex two dimensional NMR
  • crystal structure ruthenium diethylimidazolylidene phosphine carbonyl hydride complex
  • Isomerization (cis-trans
  • Dehydrogenation
  • and crystal structures of ruthenium N-heterocyclic carbene complexes)
  • NMR spectroscopy (two-dimensional
  • ruthenium diethyldimethylimidazolylidene phosphine carbonyl hydride complex prepn structure thermolysis
  • Carbene complexes Role
  • Bond (carbon-hydrogen
  • SPN (Synthetic preparation)

Fingerprint Dive into the research topics of 'Reversible Intramolecular Alkyl C-H Bond Activation, Alcohol Dehydrogenation, and Trans-Cis Dihydride Isomerization in Ruthenium N-Heterocyclic Carbene Complexes'. Together they form a unique fingerprint.

  • Cite this