Journal
ORGANOMETALLICS
Volume 28, Issue 16, Pages 4868-4871Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om900419b
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Funding
- NSF of China [20872129]
- Research Fund for the Doctoral Program of Higher Education
- Zhejiang University K. P. Chao's High Technology Development Foundation
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Pincer-like nickel complexes of N-heterocyclic carbenes, [Ni(3-chloro-1,4-di(N-aryl-N'-imidazolylidene)but-2-en-2-yl)(CH3CN)](PF6), have been prepared from the transmetalation reactions of the corresponding [Ag-2(1,4-di(N-aryl-N'-imidazol-2-ylidene)but-2-yne)(2)](PF6)(2) and [Ni(PPh3)(2)Cl-2]. X-ray diffraction studies show that the distorted square-planar nickel(II) complexes are supported by anionic terdentate ligands with two imidazolylidenes and one vinyl carbon donor originated from chloronickelation of the triple bond. Further studies suggest that the nickel complexes (ire excellent calalysts for Kumada-Corriu coupling reactions of aryl chlorides even at room temperature.
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