Volume 39, Number 1, July I 1997
|Page(s)||19 - 24|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Atomic and electronic structure of liquid iron trichloride
Argonne National Laboratory - Argonne, IL 60439, USA
Accepted: 29 May 1997
This letter describes the combined use of high-energy X-ray diffraction and neutron diffraction to investigate the problem of the structure of liquid . The results confirm the picture of liquid iron chloride consisting of closely packed bitetrahedral molecules which have an atomic structure consistent with the electron diffraction results in the vapor. Comparison of the X-ray and neutron results at low Q suggests a paramagnetic moment about half that expected for a free ion, and confirms the picture suggested previously for topological and chemical short-range and intermediate-range order in the melt. Comparison of the X-ray diffraction data with molecular-dynamics results suggests a charge transfer intermediate between an atomic and fully ionic charge distribution, consistent with recent ab initio molecular orbital calculations.
PACS: 61.20.Qg – Structure of associated liquids: electrolytes, molten salts, etc / 61.25.Em – Molecular liquids
© EDP Sciences, 1997
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