Direct observation of. eta. sup 2 -arene complexes of ((C sub 5 Me sub 5 )Rh(PMe sub 3 ))
Journal Article
·
· Journal of the American Chemical Society; (United States)
- Univ. of Rochester, NY (United States)
Over the past few years, there has been substantial progress in studies of the mechanism of activation of aliphatic aromatic C-H bonds by transition metals. In particular, earlier studies in the authors group have indicated that arenes coordinate to ((Ce{sub 5}Me{sub 5})Rh(PMe{sub 3})) in an {eta}{sup 2} fashion prior to C-H bond oxidative addition, and that this initial coordination permits the activation of aromatic C-H bonds to compete with aliphatic C-H bond activation. The evidence for {eta}{sup 2}-arene coordination relies heavily on indirect experiments (intramolecular isomerization of an aryl deuteride, kinetic isotope effect experiments), as the only direct evidence for arene coordination was with p-di-tert-butylbenzene at low temperature. They report here the room temperature observation of {eta}{sup 2}-arene complexes of ((C{sub 5}Me{sub 5})Rh(PMe{sub 3})) and an equilibrium between and {eta}{sup 2}-arene complex and its aryl hydride counterpart.
- DOE Contract Number:
- FG02-86ER13569
- OSTI ID:
- 7039040
- Journal Information:
- Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 111; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKYLATED AROMATICS
AROMATICS
AZAARENES
CHEMICAL ACTIVATION
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DIFFRACTION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHENANTHROLINES
PHOSPHINES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
RESONANCE
RHODIUM COMPOUNDS
RHODIUM HYDRIDES
SCATTERING
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKYLATED AROMATICS
AROMATICS
AZAARENES
CHEMICAL ACTIVATION
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DIFFRACTION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PHENANTHROLINES
PHOSPHINES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
RESONANCE
RHODIUM COMPOUNDS
RHODIUM HYDRIDES
SCATTERING
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION