Voit E. I.1, Didenko N. A. 1
1Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia
Email: evoit@ich.dvo.ru
The structure and thermal stability of compounds in the Na7Zr6F31· nH2O (n=0, 6, 12) series were studied using infrared spectroscopy (IR), Raman scattering (Raman), differential thermal, thermogravimetric (DTA-TGA) and X-ray diffraction (XRD). The vibrational (IR, Raman) spectroscopy data for the compound Na7Zr6F31 and its hydrates were obtained, systematized and summarized. The bands in the vibrational spectra of Na7Zr6F31 were assigned based on quantum-chemical calculations. Taking into account the spectroscopic data, possible structural changes were proposed during mutual transitions Na7Zr6F31↔Na7Zr6F31· nH2O during hydration-dehydration. Keywords: complex zirconium fluorides, sodium fluoridozirconates, thermogravimetry, vibrational spectroscopy.
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