利用二维核磁共振方法研究取代茚基金属钛、锆配合物的空间结构  

Study of Steric Structures of Substituted Indenyl Titanium and Zirconium Complexes Using Two Dimensional NMR Spectra

作　　者：余亦华[1] 夏薇[1] 马海燕[2] 陶晓春[2] 黄吉玲[2] 钱延龙[2] 

机构地区：[1]中国科学院上海有机化学研究所,上海200032 [2]华东理工大学金属有机化学研究室,上海200237

出　　处：《化学学报》2002年第2期347-354,共8页Acta Chimica Sinica

基　　金：国家重点基础研究专项经费 (No .G19990 6 480 1)资助项目

摘　　要：通过1H 1HTOCSY和1H 1HNOESY谱对一系列新型结构的取代茚基钛、锆配合物进行了结构上的解析 .并由此发现夹心结构的锆配合物中 ,两个茚环 (或茚环和茂环 )以及茚环上的取代基之间存在核的Overhauser效应 ,这对于茚环相对空间结构的判断提供了有效的证据 .The 1H- 1H TOCSY and 1H- 1H NOESY were used to study the structures of a series of substituted-indenyl titanium and zirconium complexes. It is found that there is nuclear Overhauser effect between the hydrogens of the two independent indenyl ligands in the sandwich complexes, which provides efficient evidences for the determination of the relative steric structure of the two indenyl ligands. Thus we suggest that the 1H- 1H NOESY dimension spectra could be an effective method to investigate the steric structures of the metallocene complexes.

关 键 词：二维核磁共振 茚基钛 锆配合物 Overhauser效应 空间结构 

分 类 号：O657.2[理学—分析化学]