Thermal stability and crystal structure of potassium fluoride monoperoxosolvate KF·H2O2期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Thermal stability and crystal structure of potassium fluoride monoperoxosolvate KF·H2O2

Authors:	K. V. Titova O. A. D'yachenko V. V. Gritsenko G. V. Shilov

Affiliation:	(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

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 constantk₁, 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.

Keywords:	peroxosolvates potassium fluoride monoperoxosolvate thermal stability crystal structure hydrogen bond
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