Abstract
The pressure of saturated and unsaturated Br2 vapors over (cation)2{[TeBr6](Br2)} (cation = Me4N+, Et4N+) solid polybromotellurates is measured via static tensimetry using membrane zero manometers in a wide range of temperatures. Experimental data are used to determine the thermal stability of these compounds (Tdec). A physicochemical model of vaporization is proven, thermodynamic characteristics of the evaporation of bromine that bonds the moieties of polybromotellurate anions (\({{\Delta }_{{{\text{pr}}}}}H_{T}^{^\circ }\), \({{\Delta }_{{{\text{pr}}}}}S_{T}^{^\circ }\), \(\ln p\) = f(T)) are calculated, and the energies of bonding between [TeBr6] octahedra and Br2 (\({{\Delta }_{{\text{b}}}}G_{T}^{^\circ }\)) are determined. Results are compared to others for bismuth polybromide complexes studied earlier.
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This work was supported by the RF Ministry of Science and Higher Education, project nos. 121031700314-5 and 121031700313-8.
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Translated by M. Timoshinina
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This article is part of the Materials of the XV Symposium with International Participation “Thermodynamics and Materials Science,” Novosibirsk, July 3–7, 2023.
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Zelenina, L.N., Chusova, T.P., Korobeinikov, N.A. et al. Thermodynamic Study of Tellurium Polybromide Complexes. Russ. J. Phys. Chem. (2024). https://doi.org/10.1134/S003602442401031X
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DOI: https://doi.org/10.1134/S003602442401031X