Neutral rare-earth-metal monoalkyl complexes and anionic rare-earth-metal dialkyl complexes with a silicon-linked diarylamido ligand were synthesized and characterized, and their catalytic activities toward the additions of dialkyl phosphites to isocyanates were developed. Reactions of rare-earth-metal trialkyl complexes RE(CH2SiMe3)3(THF)2 with a silicon-linked diarylamine ligand in n-hexane afforded
合成和表征了具有硅连接的二芳基酰胺配体的中性稀土金属单烷基络合物和阴离子稀土金属二烷基络合物,并开发了它们对亚磷酸二烷基酯加至异氰酸酯的催化活性。稀土类金属的反应的三烷基络合物RE(CH 2森达3)3(THF)2在硅联二芳基胺配体Ñ己烷,得到中性稀土类金属单烷基络合物大号RE(CH 2森达3) (THF)2(RE = Y(1),Er(2); L =(Me 2Si)(2,6- i Pr 2 C 6 H 3 N)2)的产率很高。通过H 2 L,n BuLi,的盐复分解反应合成了双核稀土金属氯化物[ L RE(μ- Cl)(THF)2 ] 2(RE = Y(3),Er(4))。和无水RECl 3。用4当量的LiCH 2 SiMe 3在甲苯中处理稀土金属氯化物,生成相应的离散的异双金属稀土金属二烷基络合物L RE(CH2 SiMe 3)2(THF)Li(THF)4(RE = Y(5),Er(6))。进一步的研究表明,在存在0