Raman structural study of ethylene glycol and 1,3-propylene glycol aqueous solutions

Авторы: Liubimovskii S.O., Novikov V.S., Ustynyuk L.Yu, Ivchenko P.V., Prokhorov K.A., Kuzmin V.V., Sagitova E.A., Godyaeva M.M., Gudkov S.V., Darvin M.E., Nikolaeva G.Yu
Журнал: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Год издания: 2022
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 1
Последняя страница: 9
Номер статьи: 121927
DOI: 10.1016/j.saa.2022.121927
Аннотация: Raman spectra of ethylene glycol (EG) and 1,3-propylene glycol (1,3-PG) aqueous solutions with the diol content from 10 to 90 mol% were measured. The diol content weakly influences the EG and 1,3-PG Raman bands in the spectra of the solutions in the region 250–1800 cm–1. This fact means that the conformational compositions of both the diols do not change significantly with dissolving in water. The intensity of the OH stretching band with respect to the diol bands intensities is the linear function of the mole content of water in the solutions. The spectral region 2800−3800 cm−1 can be used for evaluate the chemical composition of these binary solutions. DFT modeling of the Raman spectra of the EG in water shell confirms the prevalence of the gauche-conformation of EG in the aqueous solutions.
Добавил в систему: Устынюк Лейла Юрьевна

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