DMF-H2O和DMF-D2O体系中13N弛豫的动态同位素效应的研究

波谱学杂志 ›› 1994, Vol. 11 ›› Issue (2): 195-200.

DMF-H₂O和DMF-D₂O体系中¹³N弛豫的动态同位素效应的研究

黎明, 毛希安

中国科学院武汉物理研究所波谱与原子分子物理国家重点实验室, 武汉 430071

收稿日期:1993-05-06 出版日期:1994-06-05 发布日期:2018-01-20
基金资助:
中国科学院归国留学人员择优资助项目

STUDY OF THE ISOTOPE EFFECT ON ¹⁴N RELAXATION IN DMF/H₂O AND DMF/D₂O SYSTEMS

Li Ming, Mao Xian

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, The Chinese Academy or Sciences, Wuhan 430071

Received:1993-05-06 Online:1994-06-05 Published:2018-01-20

摘要/Abstract

摘要： 本文测定了DMF-H₂O和DMF-D₂O体系在全部浓度范围内(摩尔分数为0~1) DMF分子中四极核¹⁴N的弛豫时间,讨论了弛豫的溶剂同位素效应和影响四极核弛豫的因素。研究结果表明,体系中¹⁴N的弛豫与溶剂水分子的动力学行为有着密切的联系,在无限稀释条件下溶质分子的运动完全受溶剂分子的控制.

关键词: ¹⁴N弛豫, 同位素效应, DMF

Abstract: In the present paper,the dynamic isotope effect of ¹⁴N relaxation of DMF/H₂O(D₂O) system is reportcd.The ¹⁴N rclaxation times of DMF in DMF/H₂O and DMF/D₂O systems have been measured through all composition range (mole fraction of DMF from 0 to 1).The solvent isotope effect on relaxation and the factors affecting the quadrupole relaxation are discussed.The results suggest that in the given system there is a close relationship between the ¹⁴N relaxation and the kinetics of solvent water.Under infinite dilutions,the kinetics of the solute molcculcs are controlled complctely by the solvent molecules.

Key words: ¹⁴N relaxation, Isotope effect, DMF

黎明, 毛希安. DMF-H₂O和DMF-D₂O体系中¹³N弛豫的动态同位素效应的研究[J]. 波谱学杂志, 1994, 11(2): 195-200.

Li Ming, Mao Xian. STUDY OF THE ISOTOPE EFFECT ON ¹⁴N RELAXATION IN DMF/H₂O AND DMF/D₂O SYSTEMS[J]. Chinese Journal of Magnetic Resonance, 1994, 11(2): 195-200.

DMF-H₂O和DMF-D₂O体系中¹³N弛豫的动态同位素效应的研究

STUDY OF THE ISOTOPE EFFECT ON ¹⁴N RELAXATION IN DMF/H₂O AND DMF/D₂O SYSTEMS

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