Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 109, Issue 20, Pages 10194-10203Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp049278u
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We have measured the X-ray absorption (XA) spectrum of liquid (298 K) methanol at the oxygen and carbon K edges. The 4a(1) orbital at the O K edge exhibits a pronounced sensitivity to the formation of intermolecular hydrogen bonds, with significant differences observed between the vapor and bulk spectra, whereas the C K edge reveals only subtle corresponding spectral changes. Comparison with DFT computed spectra of model methanol clusters indicates that the bulk liquid comprises long chains (n > 6) and rings of hydrogen-bonded monomers.
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