Synthesis, structure and catalytic behavior of ytterbium complexes bearing a phenoxy(quinolinyl)amide ligand  

作　　者：朱曦 王耀荣 姚英明 吴冰 沈琪 

机构地区：[1]Key Laboratory of Organic Synthesis of Jiangsu Province,College of Chemistry,Chemical Engineering and Materials Science,Soochow University

出　　处：《Journal of Rare Earths》2012年第9期909-915,共7页稀土学报（英文版）

基　　金：Project supported by National Natural Science Foundation of China (21072146, 21132002);the Priority Academic Program Development of Jiangsu Higher Education Institutions and Key Laboratory of Organic Synthesis of Jiangsu,Soochow University(KJS1008)for financial support

摘　　要：Two ytterbium complexes stabilized by phenoxy（quinolinyl）amide ligand 3,5-But2-2-OC6H2CH2N-8-C9H6N （L） were synthesized and characterized. Reaction of anhydrous YbC13 with 1 equiv, of LLi2 in THF gave the ytterbium chloride [LYbCI（THF）]2 （1） in 73% yield. A further reaction of complex 1 with equimolar of NaN（SiMe3）2 in THF afforded the unexpected heterobimetallic ＂ate＂-complex L2YbNa（THF）2 （2） via a ligand redistribution reaction. Complex 2 could also be prepared in high isolated yield by the reaction of anhydrous YbC13 with 2 equiv, of LNa2 generated in situ. Both complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis, and sin- gle-crystal X-ray diffraction analysis. It was found that complex 2 was an effective catalyst for the addition reaction of aromatic amines to carbodiimides.Two ytterbium complexes stabilized by phenoxy（quinolinyl）amide ligand 3,5-But2-2-OC6H2CH2N-8-C9H6N （L） were synthesized and characterized. Reaction of anhydrous YbC13 with 1 equiv, of LLi2 in THF gave the ytterbium chloride [LYbCI（THF）]2 （1） in 73% yield. A further reaction of complex 1 with equimolar of NaN（SiMe3）2 in THF afforded the unexpected heterobimetallic ＂ate＂-complex L2YbNa（THF）2 （2） via a ligand redistribution reaction. Complex 2 could also be prepared in high isolated yield by the reaction of anhydrous YbC13 with 2 equiv, of LNa2 generated in situ. Both complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis, and sin- gle-crystal X-ray diffraction analysis. It was found that complex 2 was an effective catalyst for the addition reaction of aromatic amines to carbodiimides.

关 键 词：AMINOPHENOL YTTERBIUM heterobimetallic complex guanylation rare earths 

分 类 号：O643.32[理学—物理化学]