Application of chemometric methods in Raman spectroscopic studies of molten salt system containing MgCl₂‐KCl: Experimental evidence for existence of Mg₂Cl 73− dimer and its Raman spectrum

Investigation of the Raman spectra of the molten MgCl₂‐KCl system by the use of factor analysis indicates that the melt is a two‐component system involving equilibrium between MgCl 42− and Mg₂Cl 73−. The pure Raman spectra corresponding to these two species are recovered from the broad features via a self‐modeling method.