化学学报 ›› 1989, Vol. 47 ›› Issue (5): 491-494. 上一篇    下一篇

研究论文

二元混合溶剂的NMR弛豫研究

黄忆宁;李芝芬;刘瑞麟;袁汉珍   

  1. 北京大学物理化学研究所
  • 发布日期:1989-05-15

A study of NMR relaxation on binary mixed solvent

HUANG YINING;LI ZHIFEN;LIU RUILIN;YUAN HANZHEN   

  • Published:1989-05-15

本文测定了纯CH3OD, DMSO-d6中^2D和DMF中^1^4N的弛豫时间. 参照文献所列核四极矩偶合常数, 按公式计算它们的液体分子取向相关时间, 参照Hertz等的假设, 认为在混合溶剂中各组分的核四极矩偶合常数基本不变, 与纯质相同, 并计算了各组分分子在各个混合溶剂中的取向相关时间, 从而初步讨论了混合溶剂中各组分分子间的相互作用.

关键词: 溶剂, 二元体系, 甲醇, 氘化合物, DMF, DMSO, 弛豫时间, 核磁共振

NMR relaxation reveals information on structure and dynamic properties of liqs. According to the theory of Brownian motion and NMR relaxation for a nucleus with spin >1/2, the reorientational correlation time of a mol. in a liquid can be evaluated from the relaxation time of the quadrupolar nucleus. The relaxation time of 2H and 14N in a mixture of MeOD and DMF and that of 2H in a mixture of MeOD with DMSO or MeOH with DMSO-d6 was measured.

Key words: SOLVENTS, BINARY SYSTEM, METHANOL, DEUTERIUM COMPOUNDS, DMF, DMSO, RELAXATION TIME, NUCLEAR MAGNETIC RESONANCE

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