Conclusions
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1.
The systems HF-M2PtF6-H2O (M=K, Rb, Cs) were studied by the method of isothermal solubility.
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2.
The isotherms of the solubility of the systems studied are represented by two branches, to which various solid phases correspond: K2PtF6 and K2PtF6·HF for the system HF-K2PtF6-H2O; Rb2PtF6 and Rb2PtF6·4HF for the system HF-Rb2PtF6-H2O; Cs2PtF6 and Cs2PtF6·4HF for the system HF-Cs2PtF6-H2O.
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3.
The dependence of the solubility of hexafluoroplatinates of the alkali metals in anhydrous hydrogen fluoride on the ionic radius of the cation was established.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1246–1249, June, 1972.
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Grigorova, K.A., Zemskov, S.V. & Opalovskii, A.A. The systems HF-M2PtF6-H2O (M=K, Pb, Cs). Russ Chem Bull 21, 1205–1208 (1972). https://doi.org/10.1007/BF00854526
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DOI: https://doi.org/10.1007/BF00854526