Normal-to-Abnormal Rearrangement and NHC Activation in Three-Coordinate Iron(II) Carbene Complexes

详细信息    查看全文

• 作者：Benjamin M. Day ; Thomas Pugh ; Dani毛l Hendriks ; C茅lia Fonseca Guerra ; David J. Evans ; F. Matthias Bickelhaupt ; Richard A. Layfield
• 刊名：Journal of the American Chemical Society
• 出版年：2013
• 出版时间：September 11, 2013
• 年：2013
• 卷：135
• 期：36
• 页码：13338-13341
• 全文大小：243K
• 年卷期：v.135,no.36(September 11, 2013)
• ISSN：1520-5126

文摘

The 鈥榥ormal鈥?three-coordinate iron鈥揘HC complex [(IPr)Fe(N鈥测€?₂] (N鈥?= N(SiMe₃)₂) rearranges to its abnormal NHC analogue [(aIPr)Fe(N鈥?₂] (6) on heating, providing a rare abnormal iron鈥?i>aNHC complex, and the first such three-coordinate complex. The tert-butyl-substituted complex [(I^tBu)Fe(N鈥?₂] (4) undergoes a thermal decomposition that has not previously been observed in iron鈥揘HC chemistry, resulting in the bis(imidazole) complex [(^tBuIm)₂Fe(N鈥?₂] (7). A mechanism that involves consecutive C鈥揌 and C鈥揘 activation is proposed to account for the formation of 7.