1H NMR spectra of triethylamine binary aqueous solutions as functions of concentration and temperature. The triethylamine rich phase

被引：2

作者：

Kozlova, Svetlana G. ^{[1
]}

Tkachev, Sergey, V ^{[1
]}

机构：

[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Lavrentyev Av 3, RU-630090 Novosibirsk, Russia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2021年 / 343卷

关键词：

Binary aqueous solutions; Phase transition; Triethylamine/water; H-1; NMR; LIQUID-LIQUID INTERFACES; HEAT-CAPACITY; MAGNETIC-SUSCEPTIBILITIES; CRITICAL EXPONENTS; CRITICAL-BEHAVIOR; NMR-SPECTROSCOPY; CRITICAL INDEXES; WATER MIXTURES; CRITICAL-POINT; DIMENSIONS;

D O I：

10.1016/j.molliq.2021.117684

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Triethylamine (Et3N) aqueous solutions with different weight contents of dissolved molecules (9, 18, 25, 30, and 42 wt% of Et3N) were studied for the first time by the H-1 NMR method in the region of the liquidliquid phase transition. After an interface between two phases was formed, anomalous inhomogeneous broadening of H-1 NMR lines of Et3N molecules was discovered in the Et3N rich phase. The inhomogeneous character of broadening depends on the weight content of dissolved molecules and is observed up to 313 K. It is concluded that the studied systems exist in the transition region between critical and classical states. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：5

共 58 条

[1] Control of optically active structure of thioether-phthalocyanine aggregates by chiral Pd(II)-BINAP complexes in toluene and at the toluene/water interface [J].