N-Heterocyclic Silylenes as ambiphilic Ligands in Organometallic Chemistry

该项目包括使用n -杂环硅烯（NHSis）与五元重氮硅环戊烯环（Arduengo-Carbenes的高级同系物）作为有机金属化学中的配体。我们之前的工作已经证明，NHSi配体为配位化学提供了有趣的特征，这与NHC或膦配体所观察到的配位化学有很大不同。因此，本文将对NHSi配合物的合成、反应性和性能进行详细的探讨。该项目的主要目标是：(1)在复杂合成中建立空间要求较低的NHSi配体，(2)在很大程度上扩展表征良好的NHSi配合物的基础，并详细探索这些化合物的性质，(3)系统地探索NHSi配合物的反应性，(4)对选定的NHSi配合物的催化活性进行首次研究。

This project comprises the use of N-heterocyclic silylenes (NHSis) with five-membered diazasilacyclopentene rings, the higher homologues of the Arduengo-Carbenes, as ligands in organometallic chemistry. Our previous work has demonstrated that NHSi ligands provide interesting features for coordination chemistry, which are considerably different from those observed for NHC or phosphine ligands. Therefore, synthesis, reactivity and properties of NHSi complexes will be explored in detail. The main goals of the project are (i) to establish sterically less demanding NHSi ligands in complex synthesis, (ii) to expand the basis of well-characterized NHSi complexes considerably and to explore the properties of these compounds in detail, (iii) to explore the reactivity of NHSi complexes systematically and (iv) to perform first investigations concerning the catalytic activity of selected NHSi complexes.