Synthesis, structure and catalytic behavior of ytterbium complexes bearing a phenoxy(quinolinyl)amide ligand
来源期刊：Journal of Rare Earths2012年第9期
论文作者：朱曦 王耀荣 姚英明 吴冰 沈琪
文章页码：909 - 915
摘 要：Two ytterbium complexes stabilized by phenoxy（quinolinyl）amide ligand 3,5-Bu t 2 -2-OC 6 H 2 CH 2 N-8-C 9 H 6 N （L） were synthesized and characterized. Reaction of anhydrous YbCl 3 with 1 equiv. of LLi 2 in THF gave the ytterbium chloride [LYbCl（THF）] 2 （1） in 73% yield. A further reaction of complex 1 with equimolar of NaN（SiMe 3 ） 2 in THF afforded the unexpected heterobimetallic "ate"-complex L 2 YbNa（THF） 2 （2） via a ligand redistribution reaction. Complex 2 could also be prepared in high isolated yield by the reaction of anhydrous YbCl 3 with 2 equiv. of LNa 2 generated in situ. Both complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis. It was found that complex 2 was an effective catalyst for the addition reaction of aromatic amines to carbodiimides.
朱曦，王耀荣，姚英明，吴冰，沈琪
Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University
摘 要：Two ytterbium complexes stabilized by phenoxy（quinolinyl）amide ligand 3,5-Bu t 2 -2-OC 6 H 2 CH 2 N-8-C 9 H 6 N （L） were synthesized and characterized. Reaction of anhydrous YbCl 3 with 1 equiv. of LLi 2 in THF gave the ytterbium chloride [LYbCl（THF）] 2 （1） in 73% yield. A further reaction of complex 1 with equimolar of NaN（SiMe 3 ） 2 in THF afforded the unexpected heterobimetallic "ate"-complex L 2 YbNa（THF） 2 （2） via a ligand redistribution reaction. Complex 2 could also be prepared in high isolated yield by the reaction of anhydrous YbCl 3 with 2 equiv. of LNa 2 generated in situ. Both complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis, and single-crystal X-ray diffraction analysis. It was found that complex 2 was an effective catalyst for the addition reaction of aromatic amines to carbodiimides.
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