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A study of hydrogen bonding in concentrated diol/water solutions by proton NMR correlations with glass formation

journal contribution
posted on 01.08.1990, 00:00 authored by Maria ForsythMaria Forsyth, D MacFarlane
Solute/water interactions in a series of diol solutions have been investigated by 1H NMR. Strong hydrogen bonding between water and alcohols that are more basic than water is thought to result in lower chemical shifts of water protons compared to the case of pure water. This is attributed to a greater degree of covalent character in the hydrogen bonding between water and the more basic diols. The inductive effect of the methyl group and longer chain alkyls is observed to increase basicity in ethylene glycol, propylene glycol, and 2,3-butanediol solutions. A correlation between the glass-forming ability of the diol solutions and the stronger hydrogen-bonding solutes (i.e., stronger bases) is developed, with 2,3-butanediol best promoting glass formation at the lowest concentrations.

History

Journal

Journal of physical chemistry B : condensed matter, materials, surfaces, interfaces and biophysical

Volume

94

Issue

17

Pagination

6889 - 6893

Publisher

American Chemical Society

Location

Washington, D.C.

ISSN

1520-6106

eISSN

1520-5207

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1990, American Chemical Society