典型文献
Enhancement on Hemilabile Phosphine-Amide Palladium and Nickel Catalysts for Ethylene (Co)Polymerization with Polar Monomers Using a Cyclizing Strategy
文献摘要：
To address the issue of hemilabile catalyst in olefin polymerization catalysis,a cyclizing strategy was used to construct novel N-bridged phosphine-carbonyl palladium and nickel catalysts,resulting in improvements on ethylene (co)polymerizations.The N-bridged phosphine-carbonyl Pd catalysts (Pd1-Pd5) and Ni catalysts (Ni1-Ni5) bearing five-to eight-membered-ring structures were designed and synthesized.Catalytic performance for ethylene (co)polymerization became better as the size of N-containing bridge increased.The seven-membered-ring bridged catalysts Pd4 and Ni4 exhibited the best performance in terms of catalytic activity,polymer molecular weight and incorporation of acrylates and acrylic acid.The better performance of these catalysts bearing larger-size bridges was tentatively attributed to the methylene-induced higher electron density around nitrogen,which strenghtens the coordination of carbonyl group to metal center,and also to the steric effect offered by this cyclization.This work provides a new strategy to enhance hemilabile polymerization catalysts.
文献关键词：
中图分类号：
作者姓名：
Lei Cui;Yu-Kai Chu;Da-Jun Liu;Ying-Feng Han;Hong-Liang Mu;Zhong-Bao Jian
作者机构：
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;School of Chemistry and Environmental Engineering,Changchun University of Science and Technology,Changchun 130022,China;Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education,College of Chemistry and Materials Science,Northwest University,Xi'an 710127,China
文献出处：
引用格式：
[1]Lei Cui;Yu-Kai Chu;Da-Jun Liu;Ying-Feng Han;Hong-Liang Mu;Zhong-Bao Jian-.Enhancement on Hemilabile Phosphine-Amide Palladium and Nickel Catalysts for Ethylene (Co)Polymerization with Polar Monomers Using a Cyclizing Strategy)[J].高分子科学（英文版）,2022(03):241-247
A类：
Hemilabile,Phosphine,Cyclizing,hemilabile,cyclizing,Pd5,strenghtens
B类：
Enhancement,Amide,Palladium,Nickel,Catalysts,Ethylene,Co,Polymerization,Polar,Monomers,Using,Strategy,To,address,issue,olefin,catalysis,strategy,was,used,construct,novel,bridged,phosphine,carbonyl,palladium,nickel,catalysts,resulting,improvements,polymerizations,Pd1,Ni1,Ni5,bearing,five,membered,structures,were,designed,synthesized,Catalytic,performance,became,better,containing,increased,seven,Pd4,Ni4,exhibited,best,terms,catalytic,activity,molecular,weight,incorporation,acrylates,acrylic,acid,these,larger,bridges,tentatively,attributed,methylene,induced,higher,electron,density,around,nitrogen,which,coordination,group,metal,center,also,steric,effect,offered,by,this,cyclization,This,work,provides,new,enhance
AB值：
0.585062
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