One ligand fits all: Cationic mono(amidinate) alkyl catalysts over the full size range of the group 3 and lanthanide metals

被引：240

作者：

Bambirra, S ^{[1
]}

Bouwkamp, MW ^{[1
]}

Meetsma, A ^{[1
]}

Hessen, B ^{[1
]}

机构：

[1] Univ Groningen, Stratingh Inst Chem & Chem Engn, Ctr Catalyt Olefin Polymerizat, NL-9747 AG Groningen, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 30期

关键词：

D O I：

10.1021/ja0475297

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using a sterically demanding amidinate ancillary ligand and an in situ alkylation procedure, neutral mono(amidinate) dialkyl and cationic mono(amidinate) monoalkyl complexes were prepared for metals spanning the full size range of the group 3 and lanthanide metals. The activity of the cationic monoalkyls in catalytic ethene polymerization was found to vary by over 2 orders of magnitude depending on the metal ionic radius, the intermediate metal sizes being found to be the most effective. Copyright © 2004 American Chemical Society.

引用

页码：9182 / 9183

页数：2

共 24 条

[1] The first structurally characterized cationic lanthanide-alkyl complexes [J].

Arndt, S ;

Spaniol, TP ;

Okuda, J .

CHEMICAL COMMUNICATIONS, 2002, (08) :896-897

[2] Homogeneous ethylene-polymerization catalysts based on alkyl cations of the rare-earth metals: Are dicationic mono(alkyl) complexes the active species? [J].

Arndt, S ;

Spaniol, TP ;

Okuda, J .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (41) :5075-5079

[3] Alkyl complexes of rare-earth metals that contain a furyl-functionalized cyclopentadienyl ligand: Alkyl cation formation and unexpected ring-opening reaction of the furyl group [J].

Arndt, S ;

Spaniol, TP ;

Okuda, J .

ORGANOMETALLICS, 2003, 22 (04) :775-781

[4]

ARNDT S, 2003, J CHEM SOC DA, P3622

[5] NEUTRAL AND ANIONIC SILYLMETHYL COMPLEXES OF GROUP 3A AND LANTHANOID METALS - X-RAY CRYSTAL AND MOLECULAR-STRUCTURE OF [LI(THF)4][YB(CH(SIME3)2)3CL] (THF=TETRAHYDROFURAN) [J].

ATWOOD, JL ;

HUNTER, WE ;

ROGERS, RD ;

HOLTON, J ;

MCMEEKING, J ;

PEARCE, R ;

LAPPERT, MF .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1978, (03) :140-142

[6] Yttrium alkyl complexes with a sterically demanding benzamidinate ligand: synthesis, structure and catalytic ethene polymerisation [J].

Bambirra, S ;

van Leusen, D ;

Meetsma, A ;

Hessen, B ;

Teuben, JH .

CHEMICAL COMMUNICATIONS, 2003, (04) :522-523

[7] Neutral and cationic yttrium alkyl complexes with linked 1,4,7-triazacyclononane-amide monoanionic ancillary ligands: synthesis and catalytic ethene polymerisation [J].

Bambirra, S ;

van Leusen, D ;

Meetsma, A ;

Hessen, B ;

Teuben, JH .

CHEMICAL COMMUNICATIONS, 2001, (07) :637-638

[8] Cationic Group 4 metallocene complexes and their role in polymerisation catalysis: The chemistry of well defined Ziegler catalysts [J].

Bochmann, M .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1996, (03) :255-270

[9] STEREOSPECIFIC OLEFIN POLYMERIZATION WITH CHIRAL METALLOCENE CATALYSTS [J].

BRINTZINGER, HH ;

FISCHER, D ;

MULHAUPT, R ;

RIEGER, B ;

WAYMOUTH, RM .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1995, 34 (11) :1143-1170

[10] Unusual alkyl group activation and cationic complex formation from a novel lutetium dialkyl complex supported by a tridentate monoanionic ligand [J].

Cameron, TM ;

Gordon, JC ;

Michalczyk, R ;

Scott, BL .

CHEMICAL COMMUNICATIONS, 2003, (18) :2282-2283

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