Journal
CHEMPHYSCHEM
Volume 6, Issue 7, Pages 1376-1380Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200400664
Keywords
density functional calculations; isotope effects; liquids; methanol; thermodynamics
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Density functional calculations (B3LYP/6-31 + G*) on molecular clusters and a quantum cluster equilibrium (QCE) model were used to calculate thermodynamic and structural properties of four isotopically labeled methanol species. The method allowed the reproduction of the characteristic differences in boiling points and heats of vaporization. Structural changes were also detected and related to recent experimental findings. It was shown that isotopic effects clearly have a quantum-mechanical origin.
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