Thermodynamic characteristics of copper(I) perfluorocyclohexanoate C6F11COOCu

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Abstract

The [Сu—C6F11COOAg] system was studied using thermogravimetry, differential scanning calorimetry and mass spectrometry methods. It has been established that in the temperature range 370–445 K, a solid-phase exchange reaction occurs in the condensed phase of the system with the formation of C6F11COOCu and silver. The enthalpy of this reaction was found to be ΔrHo298.15 = –17.5 ± 4.0 and the standard enthalpy of formation of a crystalline copper complex ΔfHo298.15 = –2769 ± 25 kJ/mol. Sublimation of the copper complex is accompanied by the transition into the gas phase of dimeric (C6F11COOCu)2 ΔsHoТ = 134.4 ± 7.2 kJ/mol and a small amount of tetrameric molecules (C6F11COOCu)4. The standard enthalpy of formation of the dimer complex in the gas phase was calculated to be ΔfHo298.15 = –5404 ± 26 kJ/mol. The paper examines the possibility of exothermic interaction of copper perfluorocyclohexanoate with metallic copper in the condensed phase.

About the authors

I. P. Malkerova

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Author for correspondence.
Email: alikhan@igic.ras.ru
Russian Federation, Moscow

D. B. Kayumova

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Email: alikhan@igic.ras.ru
Russian Federation, Moscow

D. S. Yambulatov

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Email: alikhan@igic.ras.ru
Russian Federation, Moscow

А. V. Khoroshilov

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Email: alikhan@igic.ras.ru
Russian Federation, Moscow

А. А. Sidorov

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Email: alikhan@igic.ras.ru
Russian Federation, Moscow

А. S. Alikhanyan

Kurnakov Institute of General and Inorganic Chemistry of the RAS

Email: alikhan@igic.ras.ru
Russian Federation, Moscow

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