化学学报 ›› 1993, Vol. 51 ›› Issue (5): 506-513. 上一篇    下一篇

研究论文

大取代环戊二烯基铪的合成与结构分析

王家喜;陈寿山;王序昆;王宏根   

  1. 南开大学元素有机化学研究所;南开大学中心实验室
  • 发布日期:1993-05-15

Syntheses and structure analysis of bulkier substituted hafanocene dichlorides

WANG JIAXI;CHEN SHOUSHAN;WANG XUKUN;WANG HONGGEN   

  • Published:1993-05-15

芳基锂与6, 6-二烷基富烯发生加成反应, 生成含或不含手性碳的大位阻取代环戊二烯基负离子。用四氯化铪配合物, 合成了19个大取代茂铪化合物。讨论了其^1H NMR。化合物[(CH3)2C(C6H4-p-CH3)-C5H4]HfCl2经X射线衍射分析。晶体为单斜晶系, 空间群为I2/a, 晶胞参数a=2.2263(7), b=0.6674(2), c=2.5379(9)nm,β=135.13(3)°, R=0.058, Rw=0.069。结构研究表明, 取代基的引入, 使得茂环发生变型, 最大扭曲角为8.45°。

关键词: 晶体结构, X射线衍射分析, 环戊二烯 P, 质子磁共振谱法, 加成反应, 铪络合物

Aryllithium added with 6,6-dialkylfulvenes at exocyclic double bond to give bulkier substituted cyclopentadienyl anions with chiral or achiral carbon. Complexed by hafnium chloride nineteen bulkier substituted hafnocene dichlorides were synthesized, and those 1H NMR will be discussed. The structure of [(CH3)2C(C6H4-p-CH3)C5H4]2HfCl2 has been determine by x-ray diffraction.

Key words: CRYSTAL STRUCTURE, X-RAY DIFFRACTION ANALYSIS, CYCLOPENTADIENE P, PROTON MAGNETIC RESONANCE SPECTROMETRY, ADDITION REACTION, HAFNIUM COMPLEX

中图分类号: