Aspect in structural analysis of molten salts: Valence effect of a centered element on the structure of clustered species and molecules

摘要

As for structural analyses of molten salts so far reported, important issues such as historical details, experimental techniques, analytical approaches and their changes, interpretation of structural data accumulated, and developments in the future are briefly reviewed and commented by using the known data as well as unpublished works. Here focused on are mainly X-ray and/or neutron diffractions, and Raman spectroscopy of pure TiCl4 liquid together with a limited number of pure molten salts, in which the relationship among the coordination structure, the clustering of chemical species, and the valence effect of a centered element on the structure of clustered species and molecules are also discussed.