Synthèse Et Réactivité de Complexes Métalliques Porteurs de Ligands Carbéniques N-hétérocycliques Fonctionnels PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Synthèse Et Réactivité de Complexes Métalliques Porteurs de Ligands Carbéniques N-hétérocycliques Fonctionnels PDF full book. Access full book title Synthèse Et Réactivité de Complexes Métalliques Porteurs de Ligands Carbéniques N-hétérocycliques Fonctionnels by Xiaoyu Ren. Download full books in PDF and EPUB format.
Author: Xiaoyu Ren
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Potentially bidentate hybrid ligands (containing a NHC donor associated with an ether or an amine) and tridentate NCN pincer-type ligands (containing a central NHC donor flancked by two chemically-different nitrogen donors (Nimine and Namine)) have been prepared and used for coordination to transition metals, such as Ni, Cr, Cu, Ir. The influence of the length of the alkyl chain, -(CH2)2- or -(CH2)3- connecting the ether or the amine group to the heterocycle NHC was examined. In order to have access to the transition metal complexes, several methodologies were adopted: a) deprotonation of the corresponding imidazolium salts followed by addition of transition metal precursors; b) transmetalation from NHC silver complexes; c) oxidative-addition reaction of Ni(0) with imidazolium salts or the corresponding protonated salts. A series of Ni(II), Cr(III) complexes were tested in the catalytic ethylene oligomerization reaction.
Author: Xiaoyu Ren
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Potentially bidentate hybrid ligands (containing a NHC donor associated with an ether or an amine) and tridentate NCN pincer-type ligands (containing a central NHC donor flancked by two chemically-different nitrogen donors (Nimine and Namine)) have been prepared and used for coordination to transition metals, such as Ni, Cr, Cu, Ir. The influence of the length of the alkyl chain, -(CH2)2- or -(CH2)3- connecting the ether or the amine group to the heterocycle NHC was examined. In order to have access to the transition metal complexes, several methodologies were adopted: a) deprotonation of the corresponding imidazolium salts followed by addition of transition metal precursors; b) transmetalation from NHC silver complexes; c) oxidative-addition reaction of Ni(0) with imidazolium salts or the corresponding protonated salts. A series of Ni(II), Cr(III) complexes were tested in the catalytic ethylene oligomerization reaction.
