Chromium(III) Complexes with Chelating Anilido-Imine Ligands: Synthesis, Structures, and Catalytic Properties for Ethylene Polymerization

被引：12

作者：

Xu, Tieqi ^{[1
]}

An, Haiyan ^{[1
]}

Gao, Wei ^{[2
]}

Mu, Ying ^{[2
]}

机构：

[1] Dalian Univ Technol, Dept Chem, Dalian 116023, Peoples R China

[2] Jilin Univ, Sch Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 21期

基金：

中国国家自然科学基金;

关键词：

Chromium; Polymerization; Homogeneous catalysis; Ligand effects; OLEFIN POLYMERIZATION; MOLECULAR-STRUCTURE; BEHAVIOR; NORBORNENE; SYSTEMS; ETHENE;

D O I：

10.1002/ejic.201000150

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of novel chromium complexes that bear anilido-imine ligands, [{ortho-C(6)H(4)(NAr')(CH=NAr '')}CrCl(2)(thf)(2)] [Ar' = Ar '' = C(6)H(5) (1); Ar' = Ar '' = p-MeC(6)H(4) (2); Ar' = Ar '' = 2,6-Me(2)C(6)H(3) (3); Ar' = 2,6-iPr(2)C(6)H(3), Ar '' = 2,6-Me(2)C(6)H(3) (4); Ar' = Ar '' = 2,6-iPr(2)C(6)H(3) (5)], have been synthesized and characterized by elemental analysis, IR spectroscopy, and ESI-MS. The molecular structures of complexes 1 and 2 have been confirmed by single-crystal X-ray diffraction analysis. When activated with methylaluminoxane (MAO), these complexes exhibit reasonable to good catalytic activity for ethylene polymerization and produce polyethylene with moderate molecular weights.

引用

页码：3360 / 3364

页数：5

共 35 条

[1]

Ajjou JAN, 1998, J AM CHEM SOC, V120, P415

[2] Donor-ligand-substituted cyclopentadienylchromium(III) complexes:: A new class of alkene polymerization catalyst.: 1.: Amino-substituted systems [J].

Döhring, A ;

Göhre, J ;

Jolly, PW ;

Kryger, B ;

Rust, J ;

Verhovnik, GPJ .

ORGANOMETALLICS, 2000, 19 (04) :388-402

[3] New chromium(III) complexes as highly active catalysts for olefin polymerization [J].

Enders, M ;

Fernández, P ;

Ludwig, G ;

Pritzkow, H .

ORGANOMETALLICS, 2001, 20 (24) :5005-5007

[4] Synthesis, molecular structure, and solution-dependent behavior of nickel complexes chelating anilido-imine donors and their catalytic activity toward olefin polymerization [J].

Gao, HY ;

Guo, WJ ;

Bao, F ;

Gui, GQ ;

Zhang, JK ;

Zhu, FM ;

Wu, Q .

ORGANOMETALLICS, 2004, 23 (26) :6273-6280

[5] A five-coordinate chromium alkyl complex stabilised by salicylaldiminato ligands [J].

Gibson, VC ;

Mastroianni, S ;

Newton, C ;

Redshaw, C ;

Solan, GA ;

White, AJP ;

Williams, DJ .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2000, (13) :1969-1971

[6]

Gibson VC, 2001, EUR J INORG CHEM, P1895

[7] Chromium ethylene polymerisation catalysts bearing reduced Schiff-base N,O-chelate ligands [J].

Gibson, VC ;

Newton, C ;

Redshaw, C ;

Solan, GA ;

White, AJP ;

Williams, DJ .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1999, (06) :827-829

[8] Chromium(III) complexes bearing N,N-chelate ligands as ethene polymerization catalysts [J].

Gibson, VC ;

Maddox, PJ ;

Newton, C ;

Redshaw, C ;

Solan, GA ;

White, AJP ;

Williams, DJ .

CHEMICAL COMMUNICATIONS, 1998, (16) :1651-1652

[9] A new chelating anilido-imine donor related to β-diketiminato ligands for stabilization of organoyttrium cations [J].

Hayes, PG ;

Welch, GC ;

Emslie, DJH ;

Noack, CL ;

Piers, WE ;

Parvez, M .

ORGANOMETALLICS, 2003, 22 (08) :1577-1579

[10] A facile access to CpCr(acac)Cl and related systems [J].

Heinemann, O ;

Jolly, PW ;

Kruger, C ;

Verhovnik, GPJ .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1998, 553 (1-2) :477-479

← 1 2 3 4 →