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The molecular structure of alcohol-water mixtures determined by soft-X-ray absorption and emission spectroscopy
KTH, Superseded Departments, Biotechnology.ORCID iD: 0000-0003-0007-0394
KTH, Superseded Departments, Chemistry.
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2004 (English)In: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, Vol. 137-40, 425-428 p.Article in journal (Refereed) Published
Abstract [en]

We have examined the influence of the intermolecular interaction on the local electronic structure by using X-ray absorption and emission spectra of liquid methanol, water, and their mixtures (in molar ratios of 9:1 and 7:3). We find a strong involvement of hydrogen bonding in the mixing of water and methanol molecules. The local electronic structure of water and methanol clusters, where water cluster is bridging within a 6-member open-ring structured methanol cluster, is separately determined. The experimental findings suggest an incomplete mixing of water-alcohol systems and a strong self- association between methanol chain and water cluster through hydrogen bonding. The enhancement of joint water-methanol open-ring structure owes the explanation to the loss of entropy of the aqueous solutions.

Place, publisher, year, edition, pages
2004. Vol. 137-40, 425-428 p.
Keyword [en]
alcohol-water mixtures, intermolecular interaction, X-ray absorption, X-ray emission
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-23533DOI: 10.1016/j.elspec.2004.02.094ISI: 000222251900065ScopusID: 2-s2.0-2942622684OAI: diva2:342231
QC 20100525 QC 20111018 QC 20111101. 9th International Conference on Electronic Spectroscopy and Structure. Uppsala, SWEDEN. JUN 30-JUL 04, 2003Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-11-01Bibliographically approved

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Luo, YiKashtanov, StepanÅgren, Hans
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