Thermal stability and crystal structure of potassium fluoride monoperoxosolvate KF·H2O2 |
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| Authors: | K V Titova O A D'yachenko V V Gritsenko G V Shilov |
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| Institution: | (1) Institute of New Chemical Problems, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation;(2) Institute of Chemical Physics in Chernogolovka, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation |
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| Abstract: | Potassium fluoride peroxosolvate KF-H2O2 was obtained upon action of a 30% aqueous solution of hydrogen peroxide on solid potassium fluoride dihydrate. As compared to other peroxosolvates, KF-H2O2 is characterized by the highest thermal stability: the decomposition rate constantk
1, at 120°C is 1.4 10–3 min–1, the enthalpy of H2O2 addition to KF is 8.1 kcal/ mol. The correlation between the high stability of KF-H2O2 and the absence of catalytic properties of KF towards H2O2, and the formation of strong intermolecular O-H...F and intramolecular O-H...O hydrogen bonds in the crystal is discussed.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 38–44, January, 1993. |
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| Keywords: | peroxosolvates potassium fluoride monoperoxosolvate thermal stability crystal structure hydrogen bond |
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