SYNTHESIS OF ORGANOGERMANE OLIGOMERS VIA LIGAND SUBSTITUTION POLYMERIZATION FROM 1, 4-DIOXANE COMPLEX OF GERMANIUM DICHLORIDE  

作　　者：曹少魁 李晨光 郑世军 李自法 KOBAYASHI Shiro 

机构地区：[1]Department of Materials Engineering, Zhengzhou Univ., Zhengzhou, 450052, China [2]Graduate School of Engineering, Tohoku Univ., Aoba, Sendai 980-77, Japan

出　　处：《Chinese Journal of Polymer Science》1997年第4期347-352,共6页高分子科学（英文版）

基　　金：This project of 29504030 was supported by the National Natural Science Foundation of China

摘　　要：Some organogermanium oligomers with different side groups were synthesized via ligand substitution polymerization from I, l-dioxane complex of germanium dichloride with different organolithium compounds. The oligomers were isolated through either precipitation from methanol or extraction using toluene with a yield of no less than 50%. The weight average molecular weight (M-w) of the oligomers is ranging from 1.4 x 10(3) to 5.9 x 10(3) depending on the type and alkyl length of the organolithium compounds used.Some organogermanium oligomers with different side groups were synthesized via ligand substitution polymerization from I, l-dioxane complex of germanium dichloride with different organolithium compounds. The oligomers were isolated through either precipitation from methanol or extraction using toluene with a yield of no less than 50%. The weight average molecular weight (M-w) of the oligomers is ranging from 1.4 x 10(3) to 5.9 x 10(3) depending on the type and alkyl length of the organolithium compounds used.

关 键 词：organogermanium oligomer polygermane ligand substitution polymerization germanium dichloride organolithium compounds 

分 类 号：TQ316.33[化学工程—高聚物工业]