SIOC English
化学学报
高级检索

化学学报 ›› 1982, Vol. 40 ›› Issue (12): 1177-1181. 上一篇    

论文

双环戊二烯基二(芳氧基)钛、锆、铪衍生物的13C核磁共振谱

李国炜, 张殿坤   

  1. 南开大学元素有机化学研究所 天津
  • 投稿日期:1981-10-12 发布日期:2013-06-03
  • 通讯作者: 李国炜

THE 13C NMR OF BIS (CYCLOPENTADIENYL)DI (ARYLOXY) TITANIUM, ZIRCONIUM AND HAFNIUM DERIVATIVES

LI GUO-WEI, ZHANG, DIAN-KUN   

  1. Institute of Elemento-organic Chemistry, Nankai University, Tianjin
  • Received:1981-10-12 Published:2013-06-03

PDF

721

第Ⅳ副族金属的双环戊二烯基二卤化物及取代双环戊:二烯基二卤化物的13C NMR谱已有一些报道.但关于双环戊二烯基二(芳氧基)钛、锫、铪类型化合物的13C NMR谱则尚未见系统报道.我们研究其13C NMR谱,目的在于探讨第Ⅳ副族的不同金属以及芳环对位不同取代基对13C化学位移的影响.我们发现环戊二烯环的13C化学位移随金属周期数的增加而有规律地移向高场.同时,在钛、锆、铪三个系列的化合物中,不论是芳环还是环戊二烯环,其相应碳原子的13C化学位移之间存在着非常好的线性关系,相关系数等于或优于0.99.

The 13C NMR chemical shifts have been determined for compounds of the type Cp2M(OG6H4R-P) 2[Cp=η5-C5H5; M=Ti, Zr and Hf; R=H, Me, MeO, Cl, Br and I].It was shown that the 13C NMR chemical shift of cyclopentadienyl ring moved npfield ae the metal descending down the periodic column.In addition, there is a good linear correlation among the 13C NMR chemical shifts of the corresponding carbon atoms in the three aeries of Ti, Zr and Hf compounds containing both phenyl and cyclopentadienyl rings.The correlation coefficient obtained by least-square method is 0.99 or better.