研究表明配体的电子及立体效应对配合物的性能有重要影响。本项目结合吲哚富电子的特征及pincer型配体的优势，设计合成不同官能化的新型含吲哚骨架pincer型配体及其稀土金属有机配合物，研究新型配合物与小分子H2, CO, CO2, S8, P4及惰性有机小分子反应性能；结合计量化学反应的结果，以新合成的稀土金属配合物催化的吡啶及衍生物C-H键对富电子杂环化合物的亲核加成反应为模型反应，研究其催化小分子转化反应性能。研究并揭示配体取代基的电子效应、立体效应及中心金属电子效应、离子半径等对配合物的反应及催化性能的影响及规律性。通过反应中间体的分离与鉴定表征，阐明催化反应的机理。建立稀土金属有机配合物与小分子反应的新模式，发展新型催化剂及有机小分子转化新方法。项目研究将为开发我国稀土资源提供理论基础。

It has been documented that the electronic and steric effects of ligands have a great influence on properties of a complex. This project aims to design, and synthesis of different functionalized novel pincer ligands with electron-rich indolyl backbone and their rare earth metal complexes , and study their reactivity with small molecules such as H2, CO, CO2, S8, P4 and inactive small organic compounds. The catalytic reactions between the C-H bond of the pyridine derivatives and electron-rich heterocycles with the synthesized rare earth metal complexes as catalysts will be as a model reaction to investigate their catalytic activities in the transformation of small molecules on the basis of the results of the stoichiometric reactions. The electronic and steric effects of the ligands, and the electronic and ionic effects of the central metal on the reactivities and catalytic activities will be illustrated in the project. The catalytic mechanism will be proposed on the results of isolation and characterization of reaction intermediates. The new reaction modes of the synthesized rare earth metal complexes with small molecules, novel catalysts, and new methods for the small molecules transformation will be developed. It is anticipated that the project study will provide a fundamental clue in development of rare earth metal resource of our country.