New Polymerization Reactions by Dynamic Rare Earth Complexes
动态稀土配合物的新聚合反应
基本信息
- 批准号:14078224
- 负责人:
- 金额:$ 15.87万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research on Priority Areas
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1. Synthesis of Rare Earth Metal Bis(alkyl) Complexes and Conversion into Cationic Mono(alkyl) Active Species : Recently, considerable attention has been directed to rare earth metal bis(alkyl) complexes, since such complexes or cationic mono(alkyl) species prepared from them are expected to provide a sterically and electronically more unsaturated metal center and thus to show unique reactivity that differs from those of the conventional metallocenens. In this study, a series of half-sandwich rare earth metal bis(alkyl) complexes have been successfully prepared from Ln(CH_2SiMe_3)_3 (2thf) and C_5Me_4HSiMe_3. Binuclear rare earth metal bis(alkyl) complexes, in which the two metal centers are bridged by two phosphido ligands, and non-metallocene yttrium bis(alkyl) complexes have also been obtained in an analogous way. These bis(alkyl) complexes can be readily converted to the corresponding cationic mono(alkyl) species by treating with 1 equiv of [Ph_3C][B(C_6F_5)_4].2. Development of Hi … More ghly Selective Copolymerization Reactions Catalyzed by Cationic Rare Erath Metal Mono(alkyl) Species : These cationic rare earth metal species can act as excellent catalysts for the region-and stereospecific polymerization and copolymerization of various olefins. They exhibit excellent activities and selectivity for syndiospecific copolymerization of styrene with ethylene, alternating copolymerization of ethylene with norbornene or dicyclopentadiene, and isospecific 3,4-polymerization and living cis-1,4-polymerization of isoprene. Most of these polymerization reactions are unique to the rare earth metal catalysts, and are difficult to achieve by previously known catalyst systems.3. Synthesis of Rare Earth Metal Hydride Clusters and Studies on Synergistic Reactivity of These Complexes : In the course of these studies, we found that the half-sandwich rare earth metal bis(alkyl) complexes can readily react with H_2 to afford the corresponding tetranuclear octahydrido complexes. These hydride clusters exhibit high reactivities towards various multiple bonds. For example, the reaction with carbon monoxide afforded selectively ethylene under mild conditions. Less
1。稀土金属双(烷基)络合物的合成并转化为阳离子单(烷基)活性物种:最近,已经对稀土金属双(烷基)复合物进行了相当大的关注,因为这种复合物或阳离子单声道或阳离子单(烷基)物种预计会提供与常规金属的不饱和反应,并以差异为单独的反应。在这项研究中,一系列的半摩稀土金属双(烷基)配合物已成功地从LN(CH_2SIME_3)_3(2THF)和C_5ME_4HSIME_3制成。双核稀土金属双(烷基)络合物,其中两个金属中心被两个磷化物配体桥接,也以类似的方式获得了非金属新近新世Yttrium bis(烷基)络合物。这些双(烷基)复合物可以通过用[ph_3c]等效1等处理[b(c_6f_5)_4]。 HI的发展…由阳离子稀有的埃拉斯金属单(烷基)催化的更糟糕的选择性共聚反应:这些阳离子稀土金属物种可以充当各种烯烃的区域和立体特异性聚合和共聚的催化剂。它们表现出极好的活性和选择性,可与乙烯,乙烯,乙烯与诺伯烯或双环乙烯的替代共聚,以及同种呼吸烯的替代共聚,以及同种异体的3,4-聚合和生存的CIS-1,4-聚合。这些聚合反应大多数是稀土金属催化剂所独有的,并且很难通过先前已知的催化剂系统实现。3。稀土金属氢化物簇的合成以及对这些复合物的协同反应性的研究:在这些研究过程中,我们发现半摩稀有的稀土金属双Bis(烷基)复合物可以很容易地与H_2反应,以提供相应的四核八二氢体复合物。这些氢化物簇对各种多个键表现出很高的反应性。例如,在轻度条件下,与一氧化碳的反应选择性地提供了乙烯。较少的
项目成果
期刊论文数量(190)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Multimetallic catalysts in organic synthesis
- DOI:10.1016/s1351-4180(05)71202-2
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:柴崎 正勝;Yoshinori Yamamoto
- 通讯作者:柴崎 正勝;Yoshinori Yamamoto
Isolation and structural characterization of a polyhydrido lanthanide cluster complex consisting of (C5Me4SiMe3)LuH2 units
- DOI:10.1021/om021014b
- 发表时间:2003-02
- 期刊:
- 影响因子:2.8
- 作者:Olivier Tardif;and Masayoshi Nishiura;Z. Hou
- 通讯作者:Olivier Tardif;and Masayoshi Nishiura;Z. Hou
S.Kaita, Z.Hou 他5名: "Novel Two-Component Catalyst [(C_5Me_5)_2Ln][B(C_6F_5)_4]/AIR_3 (Ln=Pr,Bd,Sm, or Gd) for Highly 1,4-Cis Specific Living Polymerization of 1,3 -Butadiene"Macromol.Rapid Commun.. 24. 180-184 (2003)
S.Kaita、Z.Hou 和其他 5 人:“新型双组分催化剂 [(C_5Me_5)_2Ln][B(C_6F_5)_4]/AIR_3 (Ln=Pr,Bd,Sm, or Gd) for High 1,4- 1,3-丁二烯大分子的顺式特异性活性聚合.Rapid Commun.. 24. 180-184 (2003)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Scandium-Catalyzed Copolymerization of Ethylene with Dicyclopentadiene and Terpolymerization of Ethylene, Dicyclopentadiene, and Styrene
- DOI:10.1021/ma051323o
- 发表时间:2005-07
- 期刊:
- 影响因子:5.5
- 作者:Xiaofang Li;Z. Hou
- 通讯作者:Xiaofang Li;Z. Hou
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HOU Zhaomin其他文献
HOU Zhaomin的其他文献
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{{ truncateString('HOU Zhaomin', 18)}}的其他基金
Development of Novel Catalysts Based on Organo Rare Earth Metal Complexes
基于有机稀土金属配合物的新型催化剂的开发
- 批准号:
21225004 - 财政年份:2009
- 资助金额:
$ 15.87万 - 项目类别:
Grant-in-Aid for Scientific Research (S)
Multimetallic Catalysts Based on Rare Earth Hydride Clusters
基于稀土氢化物团簇的多金属催化剂
- 批准号:
18065020 - 财政年份:2006
- 资助金额:
$ 15.87万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
Development of novel catalysts based on rare earth complexes
基于稀土配合物的新型催化剂的开发
- 批准号:
18205010 - 财政年份:2006
- 资助金额:
$ 15.87万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Development of new rare earth metal polymerization catalysts
新型稀土金属聚合催化剂的研制
- 批准号:
13440203 - 财政年份:2001
- 资助金额:
$ 15.87万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
DEVELOPMENT OF MIXED-LIGAND-SUPPORTED LANTHANIDE POLYMERIZATION CATALYSTS
混合配体负载的镧系元素聚合催化剂的开发
- 批准号:
11640573 - 财政年份:1999
- 资助金额:
$ 15.87万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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