一个电子介导的2.3-disiladicarbene的重新排列
Kartik Chandra Mondal1, Prinson P Samuel, Herbert W Roesky
1Institut für Anorganische Chemie, Georg-August-Universität , Tammannstrasse 4, 37077 Göttingen, Germany.
Journal of the American Chemical Society
|June 10, 2014
概括
研究人员合成了一种稳定的disiladicarbene化合物,具有-双键. 进一步减少产生了重新排列的产物和盐,突出显示了基离子中间体的反应性.
科学领域:
- 有机化学 有机化学
- 主群 化学 化学
- 碳烯化学 碳烯化学
背景情况:
- 碳是有机和无机化学中的重要反应中间体.
- 基于的碳具有独特的结合和反应模式.
- 稳定的-多重键很难合成和表征.
研究的目的:
- 为了合成和表征一种新型的disiladicarbene化合物.
- 为了研究Si=Si双键的电子结构和结合.
- 为了探索disiladicarbene在减少时的反应性.
主要方法:
- 通过减少合成使用KC8.8的烯-四化添加物.
- 使用电子电离质谱学,拉曼光谱学和循环电压学进行表征.
- 理论研究包括密度函数理论 (DFT) 计算.
主要成果:
- 一种稳定的disiladicarbene, (Cy-cAAC) 2Si2,已成功合成和表征.
- 从理论和光谱研究中获得了Si=Si双键和部分Si-C双键的证据.
- 循环电压测量揭示了在电子接受时形成一个反应性激素离子中间体.
- 减少disiladicarbene导致了一个重新排列的中性产物和一个阴离子二聚体.
结论:
- 合成的disiladicarbene具有热稳定性,并具有具有独特的电子结构,具有-多重键.
- 基离子中间体具有高度反应性,导致随后的重新排列和二元化反应.
- 这项工作扩大了稳定的含化合物的范围,并提供了对其反应性的见解.
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