含氮多齿配体的合成及其应用
摘 要
稀土金属有机配合物化学至今为止已经过了近60年的发展，而其所用的有机配体化合物从环戊二烯基, 五甲基环戊二烯基发展到各种非茂配体，例如beta;-二亚胺,胍基，双酚等。其中beta;-二亚胺是我们合成所需含氮多齿配体的主要物质，可合成获得含氮三齿，四齿相关配体，而且其可与一些稀土金属形成稳定的配合物，可以有效催化初级芳基硅烷的偶合反应，还能进行催化sigma;键的复分解, 诱导C-H键的硒化等有机反应。
关键词：含氮多齿配体；有机合成；应用
Abstract
The chemistry of rare-earth organometallic complexes has been developed for nearly 60 years so far, and the organic ligands used in them have developed from Cp and its derivatives to various non-Cp ligands, such as beta;-diketiminates, guanidine, biphenolates, etc. Among them, beta;-diketiminates is the main substance for the synthesis of nitrogen-containing polydentate ligands, which can be synthesized to obtain nitrogen-containing tridentate and tetradentate related ligands. Moreover, it can form stable complexes with some rare-earth metals, which cannot only effectively catalyze the coupling reaction of primary arylsilane, but also promote organic reaction, such as being considered as a structural model for the sigma;-bond metathesis transition state and inducement of C-H bond selenation.
Key Words：nitrogen-containing multidentate ligands; organic synthesis; applications
一 相关含氮多齿配体化合物的研究进展
在稀土金属有机配合物的相关研究进展中，环戊二烯基及其衍生物是应用于配合物合成的最早的支撑配体。至今人们已经合成了很多茂基类配合物。随后，人们将目光转向了含氮的非茂配体，这是一类非常重要的配体，因为氮原子与碱金属、碱土金属以及稀土金属离子可以形成比较稳定的化学键，而且可以通过改变氮原子上的取代基来改变配体的电子效应和立体效应。
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