Synthetic and structural studies of (NHC)Pd(allyl)Cl complexes (NHC = N-heterocyclic carbene)

被引：279

作者：

Viciu, MS ^{[1
]}

Navarro, O ^{[1
]}

Germaneau, RF ^{[1
]}

Kelly, RA ^{[1
]}

Sommer, W ^{[1
]}

Marion, N ^{[1
]}

Stevens, ED ^{[1
]}

Cavallo, L ^{[1
]}

Nolan, SP ^{[1
]}

机构：

[1] Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA

来源：

ORGANOMETALLICS | 2004年 / 23卷 / 07期

关键词：

D O I：

10.1021/om034319e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and structural characterization of a series of palladium complexes bearing N-heterocyclic carbenes (NHC) as supporting ligands are described. The reaction of commercially available [Pd(allyl)Cl](2) and isolated or in situ generated NHC leads to monomeric palladium complexes where one NHC is bound to the metal center, as indicated by spectroscopic and single-crystal X-ray diffraction studies. The relative reactivity trend for these complexes as catalysts in aryl amination is discussed in terms of ligand steric properties, which vary as a function of imidazole-nitrogen substituents and perturbation resulting in modulation of ring planarity. The concept of buried volume is used to quantify the steric demand of each NHC in the corresponding complexes.

引用

页码：1629 / 1635

页数：7

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