Steric and Electronic Parameters of a Bulky yet Flexible N-Heterocyclic Carbene: 1,3-Bis(2,6-bis(1-ethylpropyl)phenyl)imidazol-2-ylidene (IPent)

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• 作者：Alba Collado ; J谩nos Balogh ; Sebastien Meiries ; Alexandra M. Z. Slawin ; Laura Falivene ; Luigi Cavallo ; Steven P. Nolan
• 刊名：Organometallics
• 出版年：2013
• 出版时间：June 10, 2013
• 年：2013
• 卷：32
• 期：11
• 页码：3249-3252
• 全文大小：285K
• 年卷期：v.32,no.11(June 10, 2013)
• ISSN：1520-6041

文摘

The free N-heterocyclic carbene IPent (1; IPent = 1,3-bis(2,6-bis(1-ethylpropyl)phenyl)imidazol-2-ylidene) was prepared from the corresponding imidazolium chloride salt (2). The steric and electronic parameters of 1 were determined by synthesis of the gold(I) chloride complex [Au(IPent)Cl] (3) and the nickel鈥揷arbonyl complex [Ni(IPent)(CO)₃] (4), respectively. 3 and 4 were fully characterized by NMR spectroscopy, elemental analysis, and X-ray diffraction studies on single crystals.