Dynamic criterion of the complex formation and the structure of molten halides: To the fortieth anniversary of the autocomplex model for the structure of melts

The results of my latest research into molten halides of alkali and alkaline-earth metals by a method of Raman spectroscopy are reviewed. A dynamic criterion for the formation of complexes in melts is considered. The results that testify to the existence of instantaneous and short-lived autocomplexes in these liquids are analyzed in the light of an autocomplex model for the structure of melts.