Oxo- and Oxofluoroaluminates in the RbF-AlO System: Synthesis and Structural Characterization.

Precise research on the RbF-AlO system was carried out by means of combining X-ray powder diffraction, high-field solid-state NMR spectroscopy, and thermal analysis methods. α-RbAlF, RbAlO, RbAlO, and new phase, RbAlOF, were identified in the system. The structure of this new rubidium oxofluoroaluminate was determined.

(Oxo)(Fluoro)-Aluminates in KF-AlO System: Thermal Stability and Structural Correlation.

Precise investigation of part of the phase diagram of KF-AlO system was performed in an experiment combining different techniques. Solidified mixtures of KF-AlO were studied by X-ray powder diffraction and high-field solid-state NMR spectroscopy over a wide range of compositions. To help with the interpretation of the NMR spectra of the solidified samples found as complex admixtures, we synthesized the following pure compounds: KAlO, KAlO, α-KAlF, KAlF, and KAlOF.