波谱学杂志 ›› 1995, Vol. 12 ›› Issue (2): 179-184.

• 研究论文 • 上一篇    下一篇

丙酮肟1H核磁共振溶剂效应的研究

张建军1, 马子川2, 张海峰3   

  1. 1. 河北师范大学实验中心;
    2. 河北师范学院化学系;
    3. 河北轻化工学院
  • 收稿日期:1994-03-21 修回日期:1994-05-30 出版日期:1995-04-05 发布日期:2018-01-17

A STUDY OF THE SOLVENT EFFECT OF ACETOXIME BY 1H NMR

Zhang Jianjun1, Ma Zichuan2, Zhang Haifeng3   

  1. Experimental Center, Hebei Normal University, Shi Jiazhuang 050016;
    2. Department of Chemistry, Hebei Teachers College, Shi Jiazhuang 050091;
    3. Hebei Institute of Chemical Technology and Light Industry, Shi Jiazhuang 0
  • Received:1994-03-21 Revised:1994-05-30 Online:1995-04-05 Published:2018-01-17

摘要: 测定了丙酮肟在四氯化碳、氯仿、二氯甲烷、苯和甲苯溶剂中随丙酮肟摩尔浓度变化的1H NMR谱,观察到在氯代甲烷溶剂中,丙酮肟分子中两个甲基和氯代甲烷的质子共振峰随丙同肟摩尔浓度增加而逐渐移向高场,而羟基共振峰却逐渐移向低场。其两个甲基表现为单峰。
在芳烃溶剂中,丙酮肟分子中两个甲基和芳烃质子共振峰随丙酮肟摩尔浓度增加逐渐移向低场,且两个甲基表现为双峰,得到了所有化学位移与丙酮肟摩尔浓度呈线性关系。

关键词: 1H NMR, 溶剂效应, 线性关系, 化学位移

Abstract: 1H NMR spectra of acetoxime have been measured as the function of the molar concentration of acetoxime in solvent of carbon tetrachloride,chloroform、dichloromethane、benzene and toluene.It has been found that the chemical shifts of the resonance absorption lines of the two methyl groups in acetoxime and of methine halide move upfield gradually as the molar concentration of acetoxime increascs, but the resonance absorption line of hydroxyl group in acetoxime movc downfield gradually. The absorption line of the two methyl groups in acetoxime shows a singlet.
In the solvent of aromatic hydrocarbons, the resonanee absorption lines of the two methyl groups in acetoxime and of aromatic hydrocarbons move downfield gradually as the molar concentration of acetoxime increases, and the absorption line of the two methyl groups in acetoxime splits to a doublet. At the same time, it has been found that all the chemical shifts show linear relation with the molar concentration of acetoxime.

Key words: 1H NMR, Solvent effects, Linear relation, Chemical shifts