Acta Chimica Sinica ›› 1980, Vol. 38 ›› Issue (5): 497-501. Previous Articles     Next Articles

二环戊二烯基二芳基铪化合物的研究

陈寿山, 刘以寅, 玄镇爱, 王序昆   

  1. 南开大学元素有机化学研究所 天津
  • 投稿日期:1978-10-18 发布日期:2013-06-03

STUDIES ON SOME SUBSTITUTED DIPHENYLHAFNOCENE COMPOUNDS

CHEN SHOU-SHAN, LIU YI-YIN, XUAN ZHEN-AI, WANG XU-KUN   

  1. Institute of Elemento-organic Chemistry, Nankai University, Tianjing
  • Received:1978-10-18 Published:2013-06-03

Di-p-tolylhafnocene,di-o-tolylhafnocene and di-m-tolylhafnocene were synthesized by reaction of aryllithium with hafnooene dichloride.The steric effect of o-methyl group in the ditolylmetallocenes(M=Ti,Zr,and Hf) were compared.It decreases in the order:di(o-tolyl) >vitanocone >di(o-tolyl) zireonocene>di(o-tolyl)-hafnocene.These compounds readily react with electrophilic reagents such as hydrogon chloride,acetyl chloride and bromine,resulting in the cleavage of the carbon-hafnium bond.The diphenylhafnocene and ditolylhafnocenes lost one phenyl or tolyl group by hydrolysis and gave the compounds with general formula [(η5-C5H5)2 Ar Hf]2O.The reaction of the latter with HCl lad to the cleavages of Ar-Hf and Hf-O-Hf bonds and the formation of hafnocene dichloride.The lR and NMR spectra of these new serial of organometallic compounds were given.