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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
获得一个稳定的Si2N2四个成员环与非Kekulé单个双基特征从一个dysylneine
Katsuhiko Takeuchi1, Masaaki Ichinohe, Akira Sekiguchi
1Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
Journal of the American Chemical Society
|July 23, 2011
概括
研究人员合成了一种新型的Si(2) N(2) 四个成员环状基化物,是一种具有独特电子性质的-化合物. 这种稳定的比拉基化物表现出封闭外分子和激素的反应性特征.
科学领域:
- 有机化学 有机化学
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
背景情况:
- 含化合物在各种化学应用中至关重要.
- 了解新-结构的合成和反应性是一个活跃的研究领域.
- 比拉迪卡洛伊德是一种有趣的化合物类别,具有独特的电子和反应性质.
研究的目的:
- 为了合成和表征一种新型的-二基化物.
- 为了研究得到的Si(2) N(2) 四个环的结构和电子特性.
- 为了探索这种新化合物的反应性.
主要方法:
- 一个四甲基-2-yne与四甲基亚二二的反应.
- 使用NMR光谱和X射线晶体学对产品进行隔离和表征.
- 通过EPR光谱测定激素的特性.
主要成果:
- 合成一个平面的,中心对称的Si(2) N(2) 四个成员的环状基化物,以深紫色晶体的形式分离.
- X射线结晶学显示Si-Si距离为2.63380(9) Å,表明没有直接的Si-Si键相互作用.
- 该化合物没有表现出任何EPR信号,这表明它具有非局部化的电子结构.
- 与甲醇和四化碳的反应表明了双重反应性 (封闭和基质类型).
结论:
- 一个具有平面四个成员环的新型Si(2) N(2) 基化物成功合成和特征化.
- 该化合物具有独特的电子结构,没有直接Si-Si键,表现出两性反应性.
- 这项研究扩大了-化学和比拉基卡洛伊德系统的范围.
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