二价镧系均配金属化合物“Open-Metallocenes”——双(2,4-二叔丁基戊二烯基)钐和镱配合物（英文）  

Homoleptic Divalent Lanthanide “Open-Metallocenes”—Bis(2,4-tBu_2-pentadienyl)Sm and Yb Complexes

作　　者：陈润海[1] 王平[1] 刘青[1] 董云会[1] 李月云[1] 

机构地区：[1]山东理工大学化学工程学院,淄博255049

出　　处：《无机化学学报》2015年第6期1239-1244,共6页Chinese Journal of Inorganic Chemistry

基　　金：国国家自然科学基金(No.21405095);山东省高等学校科技计划项目(No.J14LC09)资助项目

摘　　要：双(2,4-二叔丁基戊二烯基)镧系金属化合物(η5-Pdl′)2Yb(THF)(1)和(η5-Pdl′)2Sm(DME)(2)可以经Ln I2和2,4-二叔丁基戊二烯基钾(K(Pdl′))由置换反应制得。K(Pdl′)和Ln Cl3发生氧化还原反应也能够得到化合物1和2。对2个化合物进行了表征。X射线单晶衍射结果显示,2个化合物中Pdl′基都是以η5模式配位到金属上。2个化合物都能够在室温下引发己内酯聚合并表现出高活性,得到分子量分布窄的聚己内酯。The bis（2,4-tBu2-pentadienyl）lanthanide complexes（η5-Pdl′）2Yb（THF）（1） and（η5-Pdl′）2Sm（DME）（2）were successfully prepared in high yield by direct salt metathesis between Ln I2 and 2,4-di-butyl-pentadienyl potassium（K（Pdl′））. Complexes 1 and 2 could also be obtained smoothly from the reaction of Ln Cl3 and K（Pdl′）through oxidation-reduction reaction. These two compounds were characterized and the X-ray single crystal analysis revealed a predominantly η5-pentadienyl-metal bonding. Both two compounds could initiate ring-opening polymerization of ε-caprolactone rapidly at room temperature and led to narrow polydispersities with high activity.CCDC： 1045037, 1; 1045038, 2.

关 键 词：钐 镱 戊二烯基 聚合 己内酯 

分 类 号：O614.331[理学—无机化学] O614.346[理学—化学]