Lewis Base Stabilized Group 14 Metalylenes

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• 作者：Amit Pratap Singh ; Prinson P. Samuel ; Kartik Chandra Mondal ; Herbert W. Roesky ; Navdeep S. Sidhu ; Birger Dittrich
• 刊名：Organometallics
• 出版年：2013
• 出版时间：January 14, 2013
• 年：2013
• 卷：32
• 期：1
• 页码：354-357
• 全文大小：271K
• 年卷期：v.32,no.1(January 14, 2013)
• ISSN：1520-6041

文摘

The chemistry of stable metalylenes (the heavier group 14 element analogues of carbenes) is an intriguing target of main group chemistry due to their synthetic potential and industrial application. In the present study, we report on the utilization of an abnormal N-heterocyclic carbene (aNHC) and a cyclic alkyl-amino carbene (cAAC) as a Lewis base for the syntheses of compounds aNHC路SiCl₂ (3), aNHC路SnCl₂ (4), and cAAC路SnCl₂ (5). The synthesis of silylene 3 involved the ligand-substitution reaction between NHC路SiCl₂ and an aNHC. However, compounds 4 and 5 were synthesized by the reactions of aNHC and cAAC with SnCl₂ in the molar ratio of 1:1. Compounds 3鈥?b>5 are well-characterized with various spectroscopic methods and single-crystal X-ray structural analysis.