中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (3): 71-74.

• 研究简报 • 上一篇    下一篇

H2O-CHCl3-CCl4体系中水行为的1H NMR研究

陈智1, 吴雄武1, 滕藤1, 宁永成2   

  1. 1. 清华大学化学工程系 北京;
    2. 清华大学化学系 北京
  • 收稿日期:1988-05-30 修回日期:1988-08-29 出版日期:1989-06-10 发布日期:1989-06-10

1H NMR STUDY oF WATER IN H2O-CHCl3-CCl4 SYSTEM

Chen Zi1, Wu Xiongwu1, Teng Teug1, Ning Yongcheng2   

  1. 1. Department of Chemical Engineering, Qinghua University, Beijing;
    2. Department of Chemistry, Qinghua University, Beijing
  • Received:1988-05-30 Revised:1988-08-29 Published:1989-06-10 Online:1989-06-10

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摘要： 我们以四氯化碳为稀释剂,用1H NMR研究了水分子及其聚合物与氯仿的氢键作用.实验用氯仿.四氯化碳以及四甲基硅烷(TMS)均为北京化工厂分析纯试剂,其中氯仿经纯化后,取用60℃馏份.测试用亚沸蒸馏水.溶液在配好后平衡24小时,以TMS为内标,在日本电子FX-90Q NMR仪上测化学位移.溶液的水浓度用三菱CA-05型测水仪测定,精度为1%,实验温度24±℃.

关键词: 水, 氯仿, 氢键, 缔合, 核磁共振

Abstract: The behaviour of water in H2O-CHCl3-CCl4 system is studied.by 1H NMR method.Water is thought to exist in the form of H2O, H2O·CHCl3, (H2O)2 and (H2O)2·CHCl3 in the system .The formation constants for the species of H2O·CHCl3, (H2O)2 and (H2O)2·CHCl3 evaluated from NMR data are 1.56, 15.3 and 18.5 (mole fraction) respectively.

Key words: Water, Chloroform, Hydrogen bond, Association, NMR

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