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Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors
其他题名Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors
Xu X(徐信); Xu XY(徐小燕); Chen YF(陈耀峰); Sun J(孙杰)
2008
发表期刊Organometallics
ISSN0276-7333
卷号27期号:4页码:758-763
摘要Three new tridentate NNN ligand precursors, CH(3)C(2,6-((i)Pr)(2)C(6)H(3)NH)CHC(CH(3))(NCH(2)CH(2)-D) (D = NMe(2), NEt(2), N((CH(2)CH(2))(2)CH(2))), were synthesized. Subsequent metalations with in situ generated Ln(CH(2)SiMe(3))(3)(THF)(n) (Ln = Nd, Sm, Y, Lu) provided six solvent-free dialkyllanthanide complexes. Five of the lanthanide complexes were characterized by single-crystal X-ray diffraction, which showed that the pendant arm D bonds to the lanthanide ion in the solid state. The NMR spectra of these complexes in C(6)D(6) showed that such coordination is retained in solution. These dialkyllanthanide complexes show high activities for the ring-opening polymerization of epsilon-caprolactone, in which narrow-polydispersity polymers were produced. The size of the pendant arm has a significant effect on the molecular weight of the polymer obtained. In comparison to the Y complex with a -NMe(2) group, the Y complexes with -NEt(2) and -N((CH(2)CH(2))(2)CH(2)) groups yield much higher molecular weight polymer (60 000 vs 20 000).
学科领域金属有机化学
部门归属中国科学院上海有机化学研究所; 同济大学
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收录类别SCI
语种英语
WOS记录号WOS:000253268000038
引用统计
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/21421
专题金属有机化学国家重点实验室
通讯作者Chen YF(陈耀峰)
推荐引用方式
GB/T 7714
Xu X,Xu XY,Chen YF,et al. Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors[J]. Organometallics,2008,27(4):758-763.
APA 徐信,徐小燕,陈耀峰,&孙杰.(2008).Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors.Organometallics,27(4),758-763.
MLA 徐信,et al."Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors".Organometallics 27.4(2008):758-763.
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