Molecular structure of alcohol-water mixtures
2003 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 91, no 15Article in journal (Refereed) Published
We use x-ray emission spectroscopy to elucidate the molecular structure of liquid methanol, water, and methanol-water solutions. We find that molecules in the pure liquid methanol predominantly persist as hydrogen-bonded chains and rings with six and/or eight molecules of equal abundance. For water-methanol solutions we find evidence of incomplete mixing at the microscopic level. Our results provide a new explanation for a smaller entropy increase in the solution due to water molecules bridging methanol chains to form rings.
Place, publisher, year, edition, pages
2003. Vol. 91, no 15
liquid methanol, diffraction, simulation, clusters, neutron
IdentifiersURN: urn:nbn:se:kth:diva-22880DOI: 10.1103/PhysRevLett.91.157401ISI: 000185862500043OAI: oai:DiVA.org:kth-22880DiVA: diva2:341578
QC 201005252010-08-102010-08-102010-11-01Bibliographically approved