共 59 条
Synthesis, characterization, and catalytic ethylene oligomerization of pyridine-imine palladium complexes
被引:46
作者:

Chen, Xiao-Lin
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Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China

Gao, Jie
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Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China

Liao, Heng
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h-index: 0
机构:
Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China

Gao, Hai-Yang
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h-index: 0
机构:
Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China

Wu, Qing
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h-index: 0
机构:
Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China
机构:
[1] Sun Yat Sen Univ, Sch Mat Sci & Engn, Key Lab Polymer Composite & Funct Mat,Minist Educ, Guangdong Lab High Performance Polymer Composites, Guangzhou 510275, Guangdong, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Palladium;
Ethylene;
Oligomerization;
Branching;
MOLECULAR-WEIGHT POLYETHYLENE;
CHAIN-WALKING POLYMERIZATION;
NICKEL-CATALYSTS;
LIVING POLYMERIZATION;
OLEFIN POLYMERIZATION;
VINYL-POLYMERIZATION;
DIIMINE CATALYSTS;
AQUEOUS-SOLUTION;
LIGAND BACKBONE;
POLAR MONOMER;
D O I:
10.1007/s10118-018-2052-8
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Two neutral five-membered pyridine-imine palladium complexes with the bulky dibenzhydryl (CH(Ph)(2)) substituted aniline were synthesized and fully characterized by nuclear magnetic resonance (NMR) and X-ray crystal diffraction. Well-defined cationic palladium complexes were further obtained by treatment of chloromethylpalladium complexes with sodium tetrakis(3,5-bis(trifluoromethyl)phenyl)borate (NaBArF) in CH3CN. Cationic palladium complexes were capable of catalyzing ethylene oligomerization without any cocatalysts. The influences of catalyst structure, reaction temperature, and ethylene pressure on ethylene oligomerization were studied in detail. The introduction of bulky benzhydryl (CH(Ph)(2)) on the ortho position of the aniline moiety enhanced catalytic activity, thermal stability of the catalyst, and molecular weight of the obtained products. Highly branched oligomers with molecular weights of 600-800 g/mol and narrow polydispersities (1.03-1.12) were produced.
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收藏
页码:176 / 184
页数:9
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