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Thermodynamic Characteristics of Silver Perfluorobenzoates C6F5COOAg·0.5C6F5COOH and C6F5COOAg

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Abstract

The thermodynamic characteristics of silver perfluorobenzoates C6F5COOAg·0.5C6F5COOH and C6F5COOAg were studied by thermogravimetry, differential scanning calorimetry, and mass spectrometry. It was found that vaporization of these compounds occurs incongruently to give metallic silver and C6F5COOH, C12F10, CO2, and C18F14 molecules. Using the 2nd and 3rd laws of thermodynamics, the standard enthalpy of formation of silver perfluorobenzoate was found to be \({{\Delta }_{{\text{f}}}}H_{{{\text{298}}}}^{^\circ }\)(C6F5COOAg, cr) = –1195.6 ± 15.7 kJ/mol and the standard enthalpy of formation of the pentafluorobenzoic acid radical was estimated to be \({{\Delta }_{{\text{f}}}}H_{{{\text{298}}.{\text{15}}}}^{^\circ }\)(C6F5COO, cr) = –878.6 ± 25.0 kJ/mol.

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ACKNOWLEGEMENTS

The study was carried out using the equipment of the Center for Collective Use of the Physical Investigation Methods, Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences.

Funding

This study was supported by the Russian Science Foundation (grant no. 21-13-00086).

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Correspondence to A. A. Sidorov.

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Translated by Z. Svitanko

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Malkerova, I.P., Kayumova, D.B., Belova, E.V. et al. Thermodynamic Characteristics of Silver Perfluorobenzoates C6F5COOAg·0.5C6F5COOH and C6F5COOAg. Russ J Coord Chem 48, 84–88 (2022). https://doi.org/10.1134/S107032842202004X

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  • DOI: https://doi.org/10.1134/S107032842202004X

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