Polymerization of acrylonitrile catalyzed by lanthanide-sodium alkoxide clusters Ln_2(OCH_2CH_2NMe_2)_(12)(OH)_2Na_8 [Ln=Yb (1),Nd (2) and Sm (3)]  

作　　者：CAO Yang LI JunMei WANG YaoRong YAO YingMing SHEN Qi 

机构地区：[1]Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China [2]State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

出　　处：《Chinese Science Bulletin》2011年第26期2780-2784,共5页

基　　金：supported by the National Natural Science Foundation of China (20972107 and 21072146)

摘　　要：Polymerization of acrylonitrile was carried out using,for the first time,the lanthanide-sodium alkoxide clusters Ln2(OCH2CH2NMe2)12(OH)2Na8 [Ln=Yb (1),Nd (2) and Sm (3)] as single component catalysts.These heterobimetallic complexes exhibit high activity and give atactic polyacrylonitriles with high molecular weight.The polymerization temperature can be varied over the range ?78 to 50°C.The solvent has a substantial effect on the polymerization activity.The order of activity for solvents is DMF>DME≈toluene≈THF>hexane.Polymerization of acrylonitrile was carried out using, for the first time, the lanthanide-sodium alkoxide clusters Ln2（OCH2CH2- NMe2）12（OH）2Na8 [Ln=Yb （1）, Nd （2） and Sm （3）] as single component catalysts. These heterobimetallic complexes exhibit high activity and give atactic polyacrylonitriles with high molecular weight. The polymerization temperature can be varied over the range -78 to 50℃. The solvent has a substantial effect on the polymerization activity. The order of activity for solvents is DMF〉DME = toluene = THF〉hexane.

关 键 词：聚合温度 丙烯腈 催化剂 集群 醇钠 SM 稀土 二甲基甲酰胺 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ226.61