Structural analysis of some molten materials by X-ray diffraction. Part 5.—LiCl, PbCl2 and their mixtures

Abstract

The molten structure of PbCl₂, LiCl and their mixtures were examined by X-ray diffraction analysis. In molten Pbcl₂, each Pb atom is surrounded by about eight Cl atoms at a distance of 2.92 Å, which is near to the sum of the ionic radii of Pb²⁺ and Cl^–. It is expected that only very few rigid complex anions will be present in molten PbCl₂. The results of X-ray diffraction analysis in molten PbCl₂ are consistent with those of Raman spectroscopy. The average Pb–Pb interaction in the molten state should be intermediate between a b.c.c. and an s.c. arrangement and the s.c. arrangement takes precedence with increasing LiCl concentration.