Conclusions
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1.
The heats of the reactions of xenon difluoride with fluoro complexes of RE(III) have been determined experimentally by the methods of DTA and mass spectrometry. The values of ArH for the thermolysis of MI 3MIVF7 to MI 3MIIIFI 6 and F2have been found.
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2.
The values of the enthalpy changes according the α⇄ β transition of KHF2, the melting of KHF2, and the melting of XeF2 have been refined and found to be equal to 41.4±1.25, 26.7±2.60, and 19.0 ± 2.0 kJ/mole, respectively.
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3.
The series of the thermodynamic stability of the fluoro complexes of RE(IV) toward the elimination of a fluoride ion has been established.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1012–1018, May, 1989.
We thank V. V. Nikulin for his help in this work.
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Kiselev, Y.M., Fadeeva, N.E., Korobov, M.V. et al. Thermodynamics of the fluorination of fluoro complexes of trivalent rare-earth elements with the general formula MI 3MIIIF6 . Russ Chem Bull 38, 913–920 (1989). https://doi.org/10.1007/BF00955417
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DOI: https://doi.org/10.1007/BF00955417