367940-34-9Relevant academic research and scientific papers
Reductive elimination of alkylamines from low-valent, alkylpalladium(II) amido complexes
Hanley, Patrick S.,Marquard, Seth L.,Cundari, Thomas R.,Hartwig, John F.
, p. 15281 - 15284 (2012)
A series of three-coordinate norbornylpalladium amido complexes ligated by bulky N-heterocyclic carbene (NHC) ligands were prepared that undergo reductive eliminations to form the alkyl-nitrogen bond of alkylamine products. The rates of reductive elimination reveal that complexes containing more-electron-donating amido groups react faster than those with less-electron-donating amido groups, and complexes containing more-sterically bulky amido groups undergo reductive elimination more slowly than complexes containing less-sterically bulky amido groups. Complexes ligated by more-electron-donating ancillary NHC ligands undergo reductive elimination faster than complexes ligated by less-electron-donating NHC ligands. In contrast to the reductive elimination of benzylamines from bisphosphine-ligated palladium amides, these reactions occur with retention of configuration at the alkyl group, indicating that these reductive eliminations proceed by a concerted pathway. The experimentally determined free energy barrier of 26 kcal/mol is close to the computed free energy barrier of 23.9 kcal/mol (363 K) for a concerted reductive elimination from the isolated, three-coordinate NHC-ligated palladium anilido complex.
Palladium(0) NHC complexes: A new avenue to highly efficient phosphorescence
Henwood, Adam F.,Lesieur, Mathieu,Bansal, Ashu K.,Lemaur, Vincent,Beljonne, David,Thompson, David G.,Graham, Duncan,Slawin, Alexandra M. Z.,Samuel, Ifor D. W.,Cazin, Catherine S. J.,Zysman-Colman, Eli
, p. 3248 - 3261 (2015)
We report the first examples of highly luminescent di-coordinated Pd(0) complexes. Five complexes of the form [Pd(L)(L′)] were synthesized, where L = IPr, SIPr or IPr? NHC ligands and L′ = PCy3, or IPr and SIPr NHC ligands. The photophysical properties of these complexes were determined in degassed toluene solution and in the solid state and contrasted to the poorly luminescent reference complex [Pd(IPr)(PPh3)]. Organic light-emitting diodes were successfully fabricated but attained external quantum efficiencies of between 0.3 and 0.7%.
Facile oxidative addition of organic halides to heteroleptic and homoleptic Pd0-N-heterocyclic carbene complexes
Lee, Jung-Hyun,Jeon, Hyeong-Tak,Kim, Yong-Joo,Lee, Kyung-Eun,Ok Jang, Young,Lee, Soon W.
, p. 1750 - 1761 (2011)
Novel heteroleptic Pd0 complexes with an N-heterocyclic carbene (NHC) ligand [(Me3P)Pd(NHC)] (NHC = IPr, 1; SIPr, 2) were obtained from [Pd(CH2=CHPh)(PMe3)2] and an equivalent of NHC [NHC = 1,3-bis(2,
