Mechanistic studies with novel NNC Ir(III) complexes: C-H activation studies with benzene

INOR 442

Somesh K. Ganesh, skganesh@usc.edu, Kenneth JH. Young, kenyoung@usc.edu, and Roy A. Periana, rperiana@usc.edu. Loker Hydrocarbon Institute, University of Southern California, 837 Bloomwalk, LHI 101, Los Angeles, CA 90089
We have been investigating the design of homogeneous catalysts based on Ir and other late transition metal complexes with N and O-donor ligands. A key objective is to design complexes that could be stable to the conditions required for generating functionalized products with these metals. We report mechanistic studies of the CH activation reaction of a new, thermally, protic and air stable, pincer, complex, (NNC)Ir(Et)(L)(TFA) (L = CH3CN or C2H4 and NNC is 6-phenyl-4,4'-bis(tert-butyl)-2,2'-bipyridine) with benzene to generate the corresponding phenyl complex by loss of ethane. These (NNC)Ir(III) complexes are also shown to catalyze H/D exchange with benzene in CF3CO2D and Tol-d8. Details of experimental studies and DFT calculations will be reported.
 

Organometallic: Catalysis
9:00 AM-12:00 PM, Monday, 11 September 2006 Moscone Center -- Room 310, Oral

Division of Inorganic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006