Reactivity of Amido-substituted Unsaturated Three-Membered Silicon Ring Compounds

在这个项目中，系统地获得中性、自由基、阴离子和阳离子不饱和的三元氨基取代硅环化合物。这些化合物将通过单晶x射线衍射、核磁共振和紫外可见光谱、质谱和量子化学方法进行全面表征，以可视化分子轨道并进行键分析。一个主要目的是详细说明这些不饱和三元硅环化合物的反应性。为此，将使用CO2、CO、N2O、N2、Ethen和H2等气体。这些试剂可以与Si=Si双键以及自由基和阴离子中的配位不饱和硅原子发生反应。阳离子Si3环化合物将测试其作为过渡金属配合物配体的潜力。此外，由于环应变的释放，预计与不饱和Si3环化合物的反应性将导致新的产品。作为进一步的试剂P4，烯、炔、叠氮化物、异氰酸酯和异氰酸酯将被利用，预计以类似的方式反应。此外，为了达到这些目的，将系统地研究每个Si3环化合物中酰胺取代基对Si=Si键特征的空间和电子性质及其反应性。此外，还将研究通过与镁、锂有机基团和溴环三硅烯的盐消除反应构建共轭pi-体系的可能性。

In this project systematic access to neutral, radical, anionic and cationic unsaturated three-membered amido-substituted silicon ring compounds will be developed. These compounds will be comprehensively characterized with single crystal X-ray diffraction, NMR and UV-Vis spectroscopy, mass spectrometry and quantum chemical methods to visualize molecular orbitals and to perform bond analysis. One main objective is to elaborate the reactivity of these unsaturated three-membered silicon ring compounds. For this purpose, gases such as CO2, CO, N2O, N2, Ethen and H2 will be employed. These reagents can undergo reactions with the Si=Si double bond and the coordinatively unsaturated silicon atoms in the radical and anionic species. The cationic Si3 ring compound will be tested for its potential to be used as a ligand for transition metal complexes. Moreover, reactivity due to the release of ring strain is expected with the unsaturated Si3 ring compounds that will lead to novel products. As further reagents P4, alkenes, alkynes, azides, isocyanides and isocyanates will be utilized that are expected to react in a similar fashion. Additionally, to these objectives the steric and electronic properties of the amido substituents on the character of the Si=Si bond in each Si3 ring compound and their reactivity will be systematically investigated. Furthermore, the possibility to build conjugated pi-systems upon salt elimination reaction with magnesium and lithium organyls and a bromocyclotrisilene will be investigated.