Molecular Self-Diffusion Coefficients in Solutions of Dimethylsulfoxide in Monoethanolamine

被引：3

作者：

Rodnikova, M. N. ^{[1
]}

Idiyatullin, Z. Sh. ^{[2
]}

Solonina, I. A. ^{[1
]}

Sirotkin, D. A. ^{[1
]}

Razumova, A. B. ^{[3
]}

机构：

[1] Kurnakov Inst Gen & Inorgan Chem, Moscow 117901, Russia

[2] Kazan Natl Tech Univ, Kazan 420111, Russia

[3] Int Acad Business & New Technol, Yaroslavl 150003, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2018年 / 92卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

proton NMR spin-echo spectroscopy; self-diffusion coefficients; dimethylsulfoxide; solvophobic effect; hydrogen bonding; STRUCTURAL REARRANGEMENT; BONDS; MODEL;

D O I：

10.1134/S0036024418080198

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：

The molecular self-diffusion coefficients of dimethylsulfoxide (DMSO) in monoethanolamine (MEA) are measured by means of proton NMR spin-echo spectroscopy at 304.6 K and DMSO concentrations varying from 0 to 30 mol %. The drop in the self-diffusion coefficient of MEA observed at low DMSO concentrations is attributed to the solvophobic effect DMSO molecules exhibit in solutions in MEA. The results obtained for the considered system are compared to similar data for the DMSO-ethylene glycol system. The differences between the two systems are explained by the higher lability of spatial hydrogen bond networks in liquid MEA, compared to ethylene glycol.

引用

页码：1486 / 1488

页数：3

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