Isotopic effects in the structure of liquid methanol: II. Experimental data in Fourier space

B. Tomberli, P. A. Egelstaff, C. J. Benmore, J. Neuefeind

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The high-precision structural measurements of several methanol isotopes described in paper I are Fourier transformed to obtain their corresponding pair correlation functions. At room temperature we have observed a structural isotopic difference depending on the methanol isotopes used ranging between 2 and 5% at intramolecular distances and between 5 and 8% at intermolecular distances relative to the magnitude of (g(r) - 1) for CH3OH. For methanol at -80°C, a maximum effect of 20% has been observed. All these effects may be explained in terms of changes in ground state librational motions and perturbations to the hydrogen bonding structure. The effects are compared with structural changes caused by temperature shifts and are shown to agree with the reciprocal space studies in paper I.

Original languageEnglish
Pages (from-to)11421-11434
Number of pages14
JournalJournal of Physics Condensed Matter
Volume13
Issue number50
DOIs
StatePublished - Dec 17 2001
Externally publishedYes

Fingerprint

Dive into the research topics of 'Isotopic effects in the structure of liquid methanol: II. Experimental data in Fourier space'. Together they form a unique fingerprint.

Cite this