Abstract
AbstractThe Raman spectra of NbCl5 dissolved in AlCl3–NaCl and AlCl3–KCl melten and molten Al2Cl6 have been examined as a function of melt composition, temperature, and NbCl5 concentration. The results are compared with previously published data. The binary AlCl3–NbCl5 system at ∼200°C contains noninteracting NbCl5, Nb2Cl10 and Al2Cl6 molecules. The complexes formed when NbCl5 is dissolved in AlCl3–MCl (MNa and K) melts depend on acidity and temperature: NbCl is present only in very basic melts; NbCl5 is stable in basic and acidic melts; Nb2Cl10 is found only in acidic melts. High temperature favors formation of NbCl5 while low temperature stabilizes Nb2Cl10.
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