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学科主题: 金属有机化学
题名: Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors
其他题名: Dialkyllanthanide complexes containing new tridentate monoanionic ligands with nitrogen donors
作者: Xu X(徐信) ; Xu XY(徐小燕) ; Chen YF(陈耀峰) ; Sun J(孙杰)
通讯作者: 陈耀峰
刊名: Organometallics
发表日期: 2008
卷: 27, 期:4, 页:758-763
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所; 同济大学
英文摘要: 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).
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000253268000038
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/21421
Appears in Collections:金属有机化学国家重点实验室_期刊论文

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Recommended Citation:
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.
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