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Citation
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HERO ID
1048103
Reference Type
Journal Article
Title
The structure of liquid methanol
Author(s)
Ludwig, R
Year
2005
Is Peer Reviewed?
1
Journal
ChemPhysChem
ISSN:
1439-4235
EISSN:
1439-7641
Volume
6
Issue
7
Page Numbers
1369-1375
Language
English
PMID
15991270
DOI
10.1002/cphc.200400663
Web of Science Id
WOS:000230521900023
Abstract
A combination of density functional calculations of molecular clusters with a quantum cluster equilibrium (QCE) model provides evidence that liquid methanol is dominated by cyclic and/or lasso structures. Only cluster populations including these structures fit the measured thermodynamic and spectroscopic properties, such as heat of vaporization, heat capacity, NMR chemical shifts, and quadrupole coupling constants. On the other hand, cluster populations comprising open-chain structures fail to reach the experimental values: the heat of vaporization is about 10 kJ mol(-1) too low, and the proton chemical shift is insufficiently downfield-shifted by about 1 ppm.
Keywords
density functional calculations; hydrogen bonds; liquids; methanol; thermodynamics
Tags
IRIS
•
Methanol (Non-Cancer)
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