一种可分离的双稳定的合成及其对小型气体分子的反应性
Yuwen Wang1, Miriam Karni2, Shenglai Yao1
1Metalorganics and Inorganic Materials, Department of Chemistry , Technische Universität Berlin , Straße des 17, Juni 135, Sekr. C2 , 10623 Berlin , Germany.
Journal of the American Chemical Society
|July 25, 2019
概括
研究人员合成了第一个由N-异环稳定的零价值化合物. 这种富含电子的(0) 化合物表现出显著的反应性,激活氨和小气态分子,开辟了化学的新途径.
科学领域:
- 有机化学
- 主要组化学
- 低价值化合物
背景情况:
- 在稳定反应性物种中,N-异环是多用途的配体.
- 零价值主组化合物是罕见的,具有独特的反应性.
- 了解低价值的电子结构对于预测其行为至关重要.
研究的目的:
- 合成和表征第一个 bis ((N-异环) -稳定零价值化合物.
- 研究新的电子结构和结合性.
- 探索的反应性(0) 化合物与小分子和易斯酸.
主要方法:
- 通过化的降解合成.
- 光谱 (NMR,IR) 和晶体 (X射线衍射) 鉴定.
- 密度函数理论 (DFT) 计算和自然键轨道 (NBO) 分析.
- 用N2O,氨,BPh3,H2和乙烯进行反应性研究.
主要成果:
- 成功合成了第一个 bis ((N-异环) 稳定 Si ((0) 化合物,SiII
- 电子结构分析显示中心Si0原子上有两个垂直的单一对.
- 证明了反应性,包括控制的氧化与N2O产生Si4O2环或1,4-添加产物,NH3激活,H2裂变和乙烯添加.
- 与BPh3形成一个新的挫败的易斯对系统.
结论:
- 新型 ((0) 化合物代表了一类稳定,低价值的物种.
- 它富含电子的性质和独特的电子配置使其能够进行多种化学转换.
- 这项工作扩大了烯化学和低价值主组元素的反应范围.
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