Structure and Reactivity of “Unusual” N-Heterocyclic Carbene (NHC)
Palladium Complexes Synthesized from Imidazolium Salts
Hélène Lebel
Marc K. Janes
André B. Charette
Steven P. Nolan
10.1021/ja049759r.s003
https://acs.figshare.com/articles/journal_contribution/Structure_and_Reactivity_of_Unusual_N_Heterocyclic_Carbene_NHC_Palladium_Complexes_Synthesized_from_Imidazolium_Salts/3341641
The reaction between palladium acetate and IMES·HCl leads to the formation of a novel palladium complex. The X-ray crystal structure analysis reveals that the palladium is C(2) bound to one NHC ligand (the normal binding mode), whereas the second ligand is attached through the C(5) carbon of the second imidazolium. The metalation site on the imidazolium salt is strongly influenced by the presence of base. Furthermore, the binding mode of the NHC to Pd is shown to substantially affect the catalytic behavior of the palladium complexes in cross-coupling reactions.
2004-04-28 00:00:00
metalation site
palladium acetate
NHC ligand
palladium complexes
binding mode
IMES
Palladium Complexes Synthesized
Imidazolium Salts
imidazolium salt
novel palladium