ChemInform Abstract: The Vapors Above Molten Mixtures of CuCl2-KCl-LaCl3

ChemInform Abstract

are investigated using a spectrophotometric method. In addition to the vapor-phase species CuCl₂, Cu₃Cl₃, and Cl₂, which are unambiguously identified, indications of the presence of Cu₂Cl₄, KCuCl₃, and a Cu-La-Cl complex are obtained. The Cl₂ pressure has a maximum corresponding approximately to the molar ratio Cu/K/La ≈ 50/35/15. This variation of the Cl₂ vapor pressure may be understood from a Lewis acid-base concept.