Structure of molten trivalent metal chlorides

Jonathan C. Wasse, Philip S. Salmon

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Neutron diffraction was used to measure the structure of molten ScCl3, YCl3 and LaCl3 to investigate its dependence on cation size: as the cation radius decreases in the order La3+, Y3+, Sc3+ there is a corresponding increase in the 'covalent' contribution to the bonding. In the transition from the (high temperature) crystalline to the liquid phase, the coordination number of chloride ions around the cation reduces from 9 to ≈6.4 in LaCl3, changes little from 6 to 5.7(4) in YCl3, and decreases from 6 to 4.8(2) in ScCl3. The data will allow for a test of the extent to which recently developed polarizable ion models can account for the observed structural trends.

Original languageEnglish
Pages (from-to)967-969
Number of pages3
JournalPhysica B: Condensed Matter
Volume241-243
DOIs
Publication statusPublished - 1 Dec 1997

Keywords

  • Bonding
  • Liquid structure
  • Molten salts
  • Neutron diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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