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学科主题: 金属有机化学
题名: Synthesis, structure, and olefin polymerization behavior of constrained-geometry group 4 metallacarboranes incorporating imido-dicarbollyl ligands
其他题名: Synthesis, structure, and olefin polymerization behavior of constrained-geometry group 4 metallacarboranes incorporating imido-dicarbollyl ligands
作者: Gao ML(高明丽) ; Tang Y(唐勇) ; Xie MH(谢美华) ; Qian ZT(钱长涛) ; Xie ZW(谢作伟)
通讯作者: 唐勇 ; 谢作伟
刊名: Organometallics
发表日期: 2006
卷: 25, 期:10, 页:2578-2584
收录类别: SCI
部门归属: 上海有机所
英文摘要: New imido-carboranes 1-(CH=NC6H3R2-2,6)-1,2-C2B10H11 (R = Pr-i (3a), Me (3b)) were successfully prepared by Schiff base condensation of 1-CHO-1,2-C2B10H11 with R2C6H3NH2. They were readily converted into the corresponding imido-dicarbollyl ligands 7-(CH=NHC6H3R2-2,6)-7,8-C2B9H11 (R = Pr-i (4a), Me (4b)) by refluxing in dry MeOH. Treatment of 3a with Ti(NMe2)(4) in hot toluene gave a constrained-geometry complex, [eta(1):eta(5)-((Pr2C6H3N)-Pr-i=CH)C2B9H10]Ti(NMe2)(2) (5a). Under the same reaction conditions, interaction of 3b with Ti(NMe2)(4) produced a mixture of [eta(1):eta(5)-(Me2C6H3N=CH)C2B9H10]Ti(NMe2)(2) (5b) and [eta(1):eta(5)-(Me2N)CH(NMe2)(C2B9H10)Ti(NMe2)(2) (8). Reaction of 4a with M(NMe2)(4) in toluene/DME at room temperature afforded 5a and [eta(1):eta(5)-((Pr2C6H3N)-Pr-i=CH)C2B9H10]M(NMe2)(2)(NHMe2) (M = Zr (6a), Hf (7a)), respectively. Complexes 5a, 6a, and 7a were active catalysts for the polymerization of ethylene in the presence of MMAO with activities of 3-16 kg/mol.h.atm. These new complexes were fully characterized by various spectroscopic techniques and elemental analyses. The molecular structures of 3a, 3b, 4a, 5a, 5b, 6a, 7a, and 8 were further confirmed by single-crystal X-ray analyses.
语种: 英语
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WOS记录号: WOS:000237389600026
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/15291
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:
Gao ML,Tang Y,Xie MH,et al. Synthesis, structure, and olefin polymerization behavior of constrained-geometry group 4 metallacarboranes incorporating imido-dicarbollyl ligands[J]. Organometallics,2006,25(10):2578-2584.
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