University of Amsterdam, van't Hoff Institute for Molecular Sciences, Nieuwe Achtergracht 166, 1018WV, Amsterdam, The Netherlands.
Dalton Trans. 2009 Sep 21(35):7080-6. doi: 10.1039/b906817a. Epub 2009 Jul 21.
A number of palladium(ii) complexes with a heteroditopic NHC-amine ligand and their precursor silver(i) carbene complexes have been efficiently prepared and their structural features have been investigated. The heteroditopic coordination of this ligand class was unequivocally shown by NMR-spectroscopy and X-ray crystallographic analysis. The neutral and cationic cis-methyl-palladium(NHC) complexes are not prone to reductive elimination, which is normally a major degenerative pathway for this type of complex. In contrast, under carbon monoxide atmosphere rapid reductive elimination of the acyl-imidazolium salt was observed.
已经高效地制备了一系列具有杂双位 NHC-胺配体的钯（ii）配合物及其前体银（i）卡宾配合物，并研究了它们的结构特征。通过 NMR 光谱和 X 射线晶体学分析明确表明了这种配体的杂双位配位。中性和阳离子顺式-甲基-钯（NHC）配合物不易发生还原消除，这通常是此类配合物的主要退化途径。相比之下，在一氧化碳气氛下，酰基-咪唑鎓盐迅速发生还原消除。
