Boryl-substituted zirconocene dichloride complexes as catalyst precursors for homogeneous ethylene polymerization

被引：8

作者：

Kestel-Jakob, Alexandra ^{[1
]}

Alt, Helmut G. ^{[1
]}

机构：

[1] Univ Bayreuth, Lab Anorgan Chem, D-95440 Bayreuth, Germany

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2007年 / 62卷 / 03期

关键词：

zirconium; ethylene polymerization; donor-acceptor catalysts; bimodal molecular weight distributions;

D O I：

10.1515/znb-2007-0303

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and characterization of 16 new boryl-substituted zirconocene dichloride complexes are reported. After activation with methyl aluminoxane (MAO) these complexes are catalysts for homogeneous ethylene polymerization. The combination of these complexes with nickel catalysts containing Lewis basic substituents produces polymers with bimodal molecular weight distributions.

引用

页码：314 / 322

页数：9

共 25 条

[1]

BROOKHART M, 1996, POLYM PREPR AM CHEM, V37, P354

[2]

Brookhart M., 1999, United States Patent, Patent No. [US5880241A, 5880241]

[3] Synthesis of cyclopentadienyl-, indenyl-, and fluorenylbis(pentafluorophenyl)boranes as ligands in titanium and zirconium half-sandwich complexes. The crystal structures of C13H9B(C6F5)(2)center dot t-BuNH2,C13H8SiMe3B(C6F5)(2), and {eta(5)-C5H4B(C6F5)(2)}TiCl3 [J].

Duchateau, R ;

Lancaster, SJ ;

ThorntonPett, M ;

Bochmann, M .

ORGANOMETALLICS, 1997, 16 (23) :4995-5005

[4] HYDROBORATION OF BIS(ALKENYLCYCLOPENTADIENYL)ZIRCONIUM DICHLORIDES [J].

ERKER, G ;

AUL, R .

CHEMISCHE BERICHTE, 1991, 124 (05) :1301-1310

[5] Synthesis of branched polyethylene using (α-diimine)nickel(II) catalysts:: Influence of temperature, ethylene pressure, and ligand structure on polymer properties [J].

Gates, DP ;

Svejda, SK ;

Oñate, E ;

Killian, CM ;

Johnson, LK ;

White, PS ;

Brookhart, M .

MACROMOLECULES, 2000, 33 (07) :2320-2334

[6] Organic functional group transformations in the periphery of a group-4 metallocene complex:: 2H-pyrrole formation at a pendant boron lewis acid [J].

Hill, M ;

Kehr, G ;

Fröhlich, R ;

Erker, G .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2003, (19) :3583-3589

[7]

HUFF RL, 2000, POLYM PREP AM CHEM S, V41, P401

[8] NEW PD(II)-BASED AND NI(II)-BASED CATALYSTS FOR POLYMERIZATION OF ETHYLENE AND ALPHA-OLEFINS [J].

JOHNSON, LK ;

KILLIAN, CM ;

BROOKHART, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (23) :6414-6415

[9] Preparation of linear alpha-olefins using cationic nickel(II) alpha-diimine catalysts [J].

Killian, CM ;

Johnson, LK ;

Brookhart, M .

ORGANOMETALLICS, 1997, 16 (10) :2005-2007

[10] Living polymerization of alpha-olefins using Ni-II-alpha-diimine catalysts. Synthesis of new block polymers based on alpha-olefins [J].

Killian, CM ;

Tempel, DJ ;

Johnson, LK ;

Brookhart, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (46) :11664-11665

← 1 2 3 →