Bisphosphano Silylenes

双膦基甲硅烷基

• 批准号: 251873218
• 负责人: Professor Dr. Rudolf Pietschnig
• 金额: --
• 依托单位: Institut für Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/251873218?language=en
• 关键词: Bisphosphano; Silylenes

In this project we propose a synthetic access to a novel type of silylenes in which the substituents are connected via P(III) atoms to the central low valent silicon atom. This setting is likely to invoke a unique electronic situation with implications for electronic excitation and reactivity of the silylene unit. The phosphorus atoms are ideally located to serve as probe reflecting the bonding situation and interaction between Si and P using 31P-NMR spectroscopy. Moreover, bridging the phosphorus atoms with a 1,1'-ferrocenylene unit, is an attractive way to get the iron atom of the metallocene in proximity to the silylene unit in order to study potential interactions between these centers. For ferrocene based carbenes unusual bonding situations and reactivity patterns towards small molecules have emerged, which shall be extended to the proposed silylenes. The remarkable redox properties of the ferrocene moiety should be well suited to investigate an electron transfer from the >P-Si-P< unit to the iron center upon initial iron oxidation. Ultimately, the results of this fundamental research may open the way to the discovery of novel reactivities and the development of low-energy excitation materials on a long term base.

在这个项目中，我们提出了一种合成途径，以一种新型的硅烯，其中取代基连接通过P（III）原子的中心低价硅原子。这种设置可能会引发一个独特的电子情况与电子激发和反应性的亚甲硅烷基单元的影响。磷原子的理想位置，作为探针反映成键的情况和Si和P之间的相互作用，使用31 P-NMR光谱。此外，用1，1 '-亚二茂铁基单元桥接磷原子是使茂金属的铁原子接近亚甲硅烷基单元以研究这些中心之间的潜在相互作用的有吸引力的方式。对于基于二茂铁的卡宾，已经出现了不寻常的键合情况和对小分子的反应性模式，这将扩展到所提出的亚甲硅烷基。二茂铁部分的显着的氧化还原性质应该非常适合于研究在初始铁氧化时从>P-Si-P<单元到铁中心的电子转移。最终，这一基础研究的结果可能为发现新的反应性和长期开发低能激发材料开辟道路。