title: New iridium and rhodium chiral di-N-heterocyclic carbene (NHC) complexes and their application in enantioselective catalysis.
abstract: New iridium and rhodium complexes prepared from C2-symmetric trans-9,10-dihydro-9,10-ethanoanthracene-11,12-bis(1-R)-benzimidazolidine-2-ylidene ligands (R=Me, iPr, and diPh) have been synthesized and characterized. Their catalytic activities have been tested in enantioselective hydrogenation and hydroformylation reactions. The ee's for the reactions are low. Evidence indicates that even chelating di-N-heterocyclic carbene ligands are susceptible to reductive elimination.
authors.affiliation: Center for Catalysis, Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, USA.
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Jeletic
authors.forename: Muhammad T
authors.initials: MT
authors.lastname: Jan
authors.forename: Ion
authors.initials: I
authors.lastname: Ghiviriga
authors.forename: Khalil A
authors.initials: KA
authors.lastname: Abboud
authors.forename: Adam S
authors.initials: AS
authors.lastname: Veige