波谱学杂志 ›› 2005, Vol. 22 ›› Issue (4): 429-435.

• 研究简报 • 上一篇    下一篇

氘代溶剂对丙烯酰胺溶剂化作用的NMR研究

  

  1. 1.新疆大学 理化测试中心,新疆 乌鲁木齐 830046;  2.新疆伊犁师范学院 化学系,新疆 伊犁  835000
  • 收稿日期:2005-05-08 修回日期:2005-06-10 出版日期:2005-12-05 发布日期:2005-12-05

Study on the Solvent Effect in  Acrylamide by NMR

  1. 1.Analysis and Research Center,Xinjiang University,Wulumqi 830046,China; 
    2.Yili Normal College,Yili 835000,China
  • Received:2005-05-08 Revised:2005-06-10 Online:2005-12-05 Published:2005-12-05

摘要:

1H NMR谱研究了丙烯酰胺(AM)分别在氘代氯仿(CDCl3)和氘代二甲基亚砜(DMSO-d6)溶剂以及在不同比率的混合溶剂中,AM的烯键C上的反式两个质子的谱峰位置开始相向移动,重叠,后又反向交错以致形成“类似镜像”的现象,用溶剂化作用讨论了成因;混合溶剂中,随着DMSO-d6摩尔分数的增加,-NH2质子和溶剂残余水质子的化学位移逐渐都向低场移动,这与-NH2和DMSO之间形成氢键,-NH2和水质子之间既有氢键生成又有质子交换有关.

关键词: 1H NMR, 丙烯酰胺, 极性非质子溶剂, 偶极-偶极, 溶剂化作用

Abstract:

The “pseudo mirroring image” relationship between  the resonance peaks of the two trans protons of acrylamide (AM) in CDCl3 and DMSO mixed solvent was studited as a function of the radio of the two solvents. The changes of chemical shifts in different solvents were studied by 1H NMR and 2D NOESY. Variable temperature 1H NMR indicated the formation of hydrogen bonds between -NH2 of AM and the protons of residue water in solvent.

Key words: 1H NMR, Acrylamide, non-proton polar solvent, dipole-dipole interaction

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