RARE-EARTH HALIDES

A review is presented of the chemistry of the anhydrous rare-earth halides. Topical emphasis is placed on the current state of chemical development in this field, preparation and purification methods, properties of the simple halides, the oxyfluorides, rare-earth metal-trihalide systems, complex ha lides, phase diagrams, and absorption spectra. Tabular data are included which summarize the currently available data on physical properties, oxidation potentials, crystallographic properties, and phase equilibria.