来自商品前体的Si-H和Si-Me键的有机基
Subrata Kundu1, Prinson P Samuel1, Soumen Sinhababu1
1Universität Göttingen , Institut für Anorganische Chemie, Tammannstrasse 4, D-37077 Göttingen, Germany.
Journal of the American Chemical Society
|July 27, 2017
概括
研究人员分离了稳定的循环氨基 (cAAC) 稳定二基. 这些新型化合物,包括第一个没有受体的分离SiH2基,表现出了显著的室温稳定性.
科学领域:
- 有机化学
- 碳化合物化学
- 激进化学
背景情况:
- 循环氨基 (cAAC) 已知可以稳定反应物种.
- 基于的二基很难分离和表征,因为它们的反应性很高.
- 之前的研究通常需要接受分子进行稳定.
研究的目的:
- 通过cAAC配体稳定新型含二基的合成和特征.
- 调查这些二极管的结构和电子特性.
- 探索在不需要接受分子的情况下分离二基的可能性.
主要方法:
- (cAAC) 2SiH2, (cAAC) SiMe2-SiMe2 ((cAAC) 和 (cAAC) SiMeCl-SiMeCl ((cAAC) 的合成
- 单晶X射线结构分析用于结构确定.
- 电子磁共振 (EPR) 光谱用于基质特征.
- 结构和结合分析的理论计算方法.
主要成果:
- 分离了三个稳定的分子二基物种: (cAAC) 2SiH2 (1), (cAAC) SiMe2-SiMe2 ((cAAC) 2) 和 (cAAC) SiMeCl-SiMeCl ((cAAC) 3).
- 在惰性条件下, 1-3 种化合物在室温下稳定超过 6 个月.
- 化合物1代表了没有受体分子的SiH2部分含有二基的首次分离.
- 结构和结合性调查证实了其多基性质和稳定性.
结论:
- cAAC连接物有效地稳定了基于的二基,使其能够被分离为分子物种.
- 化合物1的成功分离证明了稳定反应性物种的重大进展.
- 这些发现为探索二基的化学和应用开辟了新的途径.
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