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Citation: He Li-Ping, Li Zhi-Fen, Liu Rui-Lin. A Study on Binary Mixtures of Alcohols by ¹²⁹Xe NMR[J]. Acta Physico-Chimica Sinica, ;1994, 10(11): 1026-1030. doi: 10.3866/PKU.WHXB19941112 shu

A Study on Binary Mixtures of Alcohols by ¹²⁹Xe NMR

1.
Institute of Physical Chemistry,Peking University,Beijing 100871

Received Date: 24 June 1993
Available Online: 15 November 1994

129Xe NMR可以作为研究液体结构状态的探针．甲醇是一个与水结构差别最小的有机溶剂．本文研究了129Xe在甲醇-丁醇，甲醇-戊醇，甲醇-辛醇，甲醇-癸醇混合溶剂中化学位移随组成的变化，并测定了混合溶剂的密度和折射率．129Xe化学位移随混合溶剂的摩尔分数的变化为四条曲率很近的曲线，而化学位移随混合溶剂的体积分数的变化为斜率随多碳醇碳原子数增加的直线．这表明甲醇-多碳醇二元混合溶剂中不存在疏溶剂作用，而构成分子均匀分布的体系．129Xe在甲醇-丁醇，甲醇-癸醇中的化学位移与混合溶剂折射率的一种函数的关系为两条斜率很接近的直线，表明Xe在溶液中主要受范德华力作用．
- Binary mixture of alcohols,
- ¹²⁹Xe NMR,
- Solvophobic interaction,
- Perferential solvation,
- van der Waals interaction
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A Study on Binary Mixtures of Alcohols by ¹²⁹Xe NMR