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Study of vibrational spectra and thermal behavior of sodium fluorocirconate Na5Zr2F13
Russian version
DOI: 10.61011/EOS.2023.03.56183.4492-22
Didenko N. A. 1, Voit E. I.1
1Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia
Email: evoit@ich.dvo.ru
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The structure and thermal stability of the compound Na5Zr2F13 in the range of temperatures 20-800oC was studied by differential thermal and thermogravimetric analysis (DTA-TGA), X-ray diffraction analysis (XRDA) and vibrational spectroscopy.The phase transition to the high-temperature modification α-Na5Zr2F13 with dynamically disordered structure was confirmed. Infrared (IR) spectroscopy and Raman scattering (RS) spectroscopy data of the compound β-Na5Zr2F13 and its decomposition products upon heating were obtained, systematized and generalized. Based on the results of quantum-chemical calculations, the bands in the vibrational spectra of Na5Zr2F13. Keywords: complex zirconium fluorides, sodium fluorocirconates, thermogravimetry, vibrational spectroscopy. DOI: 10.61011/EOS.2023.03.56183.4492-22
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