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Thermodynamics of hydrogen bonding of weak bases in alcohol solutions: Calorimetry of solution, IR-spectroscopy and vapor pressure analysis

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dc.contributor.author Zaitseva K.
dc.contributor.author Varfolomeev M.
dc.contributor.author Solomonov B.
dc.date.accessioned 2018-09-18T20:05:17Z
dc.date.available 2018-09-18T20:05:17Z
dc.date.issued 2012
dc.identifier.issn 0022-2860
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/136384
dc.description.abstract The properties of solutes and their reactivity in aliphatic alcohols significantly depend on the formation of hydrogen bonds. In this work, calorimetric, FTIR-spectroscopic and gas chromatographic vapor pressure studies of hydrogen bonds of weak bases in solution of aliphatic alcohols were carried out. Enthalpies of solutions at infinite dilution of ketones, nitriles and acetates in methanol and octan-1-ol were measured. Obtained from the calorimetric data, the enthalpies of specific interaction of weak bases in aliphatic alcohols unexpectedly found to be positive. IR spectra of solutions of ketones in aliphatic alcohols at infinite dilution were measured at different temperatures. Enthalpies of specific interaction in studied systems obtained from the spectroscopic data confirmed the endothermic process and are in good agreement with calorimetric results. Gibbs energies and entropies of specific interaction of weak bases in aliphatic alcohols were determined. Obtained results show, that the hydrogen bonding process of weak bases in aliphatic alcohols differs substantially from the formation of complexes 1:1 ROH⋯B (B - weak proton acceptor) in aprotic media. The complicated process of hydrogen bonding of weak bases in aliphatic alcohols apparently is controlled by the entropy factor, because these values are above zero. © 2011 Elsevier B.V. All rights reserved.
dc.relation.ispartofseries Journal of Molecular Structure
dc.subject Aliphatic alcohol
dc.subject Enthalpy
dc.subject Entropy
dc.subject Gibbs energy
dc.subject Hydrogen bonding
dc.subject Weak base
dc.title Thermodynamics of hydrogen bonding of weak bases in alcohol solutions: Calorimetry of solution, IR-spectroscopy and vapor pressure analysis
dc.type Conference Paper
dc.relation.ispartofseries-volume 1018
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 14
dc.source.id SCOPUS00222860-2012-1018-SID84861677296


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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