叔丁基取代的环戊二烯基钛、锆、铪二氯化物的合成及催化乙烯聚合  

SYNTHESIS AND CHARACTERIZATION OF METALLOCENES CONTAINING TERT-BUTYL SUBSTITUTED CYCLOPENTADIENYL LIGANDS AND THEIR ACTIVITIES IN ETHYLENE POLYMERIZATION

作　　者：程延祥[1] 于晓燕[1] 金国新[1] 贾恒庆[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《高分子学报》2001年第2期139-142,共4页Acta Polymerica Sinica

基　　金：国家自然科学基金! (基金号 2 99740 2 9;2 992 5 10 1);国家重点基础研究专项经费资助!(G19990 64 80 0 )

摘　　要：(tBuC5H4 ) 2 MCl2 (M =Ti(1a) ,Zr(1b) ,Hf(1c) )和 (tBu2 C5H3 ) 2 MCl2 (M =Ti(2a) ,Zr(2b) ,Hf(2c) )可以通过单叔丁基环戊二烯基锂或双叔丁基环戊二烯基锂与MCl4 (M =Ti,Zr,Hf)在四氢呋喃中反应制备得到 ,用IR、1H NMR和EI MS对这些化合物进行了表征 .采用X光单晶结构分析测定了 (tBuC5H4 ) 2 HfCl2 的晶体结构 .The metallocene complexes ((BuC5H4)-Bu-t)(2)MCl2 (M=Ti (1a), Zr (1b), Hf (1c)) and (tBu2C5H3)(2)MCl2 (M=Ti (2a), Zr (2b), Hf (2c)) were synthesized by the react ions of Li (BuC5H4)-Bu-t and (LiBu2C5H3)-Bu-t with metal tetrachloride in THF solution. The complexes were characterized by their IR, H-1-NMR and EI-MS. The molecular structure of Ic was determined by X-ray single-crystal structure analysis. The complexes (1a similar to 2c) exhibited high activities for ethylene polymerizatin (up to 3.2x10(6) gPE/mol.h) in the presence of methylaluminoxane (MAO) at room temperature.

关 键 词：茂金属 取代环戊二烯基 合成 结构 催化聚合 聚乙烯 催化剂 钛 锆 铪 二氯化物 

分 类 号：O631.5[理学—高分子化学]