有机化学 ›› 1988, Vol. 8 ›› Issue (5): 451-453. 上一篇    下一篇

研究论文

溶剂对氟烷基卤代烷^1^9FNMR 化学位移的影响

陈庆云;何亚波;杨震宇   

  1. 中国科学院上海有机化学研究所
  • 发布日期:1988-10-25

Solvent effect on the 19F NMR chemical shifts of fluoroalkyl halides

CHEN QINGYUN;HE YABO;YANG ZHENYU   

  • Published:1988-10-25

研究了氟烷基卤代烷与溶剂间的相互作用, 以及对氟烷基卤代烷的氟19核磁共振化学位移变化的影响, 并发现了化学位移变化与各个溶剂的DN值的线性关系.

关键词: 浓度, 溶剂效应, 卤代烃, 卤代烃, 化学位移, 氟代烃, 氟19核磁共振谱法, 氟烷 P

The interaction between fluoroalkyl halides and solvents results in the variation of 19F NMR chem. shifts of Cl(CF2)4R (R = Br, I). A linear relationship between the variation of chem. shifts and the donor no. (DN) of various solvents has been found.AA. When Et3N-HMPA was used as the solvent, DdF increased first with increasing solvent concentration, and then began to level off when the mole ratio of the solvent to fluoroalkyl halide reached 2:1.

Key words: CONCENTRATION, SOLVENT EFFECT, HALOHYDROCARBON, HALOHYDROCARBON, CHEMICAL SHIFT, FLUOROHYDROCARBON, F19 NMR SPECTROMETRY, HALOTHANE P

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