Abstract
In this paper, we select the values of the molecular constants and calculate the thermodynamic functions for YI3 and Y2I6 based on a critical analysis of experimental and theoretical data on the structure and vibration frequencies of the monomeric and dimeric forms of yttrium triiodide molecules. Using the literature data on the ratio of the partial pressures of dimeric and monomeric molecules and the third law of thermodynamics, we determine the enthalpy of YI3(cr., l) + YI3(g) = Y2I6(g) reaction and calculate the composition of the yttrium iodide vapor in the temperature range of 800–961 K, for which there are literature data on the total pressure. In the considered temperature range, Pd/Pm pressure ratio is found to increase from 0.003 to 0.014. The partial pressures determined are used to calculate the sublimation enthalpies of yttrium triiodide in the form of monomeric and dimeric molecules and the enthalpies of formation of these molecules. The obtained values have been entered into the database of the IVTANTERMO software package.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Osina, E.L. and Kovtun, D.M., Russ. J. Phys. Chem. A, 2018, vol. 92, no. 5, p. 836.
Gorokhov, L.N., Osina, E.L., and Kovtun, D.M., Russ. J. Phys. Chem. A, 2018, vol. 92, no. 11, p. 2104.
Osina, E.L., Gorokhov, L.N., and Osin, S.B., Russ. J. Phys. Chem. A, 2019, vol. 93, no. 5, p. 804.
Osina, E.L., Gorokhov, L.N., and Kovtun, D.M., High Temp., 2020, vol. 58, no. 1, p. 78.
Akishin, P.A., Naumov, V.A., and Tatevskii, V.M., Kristallografiya, 1959, vol. 4, p. 194.
Ezhov, Yu.S., Komarov, S.A., and Sevast’yanov, V.G., J. Struct. Chem., 1997, vol. 38, p. 403.
Hargittai, M., Chem. Rev., 2000, vol. 100, p. 2233.
Kovács, A., J. Mol. Struct., 1999, vol. 482–483, p. 403.
Solomonik, V.G. and Marochko, O.Yu., Russ. J. Phys. Chem. A, 2000, vol. 74, no. 12, p. 2094.
Zhang, Y., Zhao, J., Tang, G., and Zhu, L., Spectrochim. Acta, Part A, 2005, vol. 62, p. 1.
Perov, P.A., Nedyak, S.V., and Mal’tsev, A.A., Vestn. Mosk. Gos. Univ., Ser. 2: Khim., 1975, vol. 16, no. 3, p. 281.
Konings, R.J.M. and Booij, A.S., J. Mol. Struct., 1992, vol. 271, no. 3, p. 183.
Marochko, O.Yu., Cand. Sci. (Chem.) Dissertation, Ivanovo: Ivanovo State Univ. Chem. Technol., 2001.
Gurvich, L.V., Veits, I.V., Medvedev, V.A., et al., Termodinamicheskie svoistva individual’nykh veshchestv (Thermodynamic Properties of Individual Substances), Moscow: Nauka, 1978, vol. 1, book 1.
Dennison, D.H., Spedding, F.H., and Daane, A.H., The determination of the melting point, the vapor pressure, and the decomposition temperature of yttrium triiodide. https://babel.hathitrust.org/cgi/pt?id=md, p. 39015086500488.
Dunaev, A.M., Kudin, L.S., Motalov, V.B., Ivanov, D.A., Butman, M.F., and Kramer, K.W., Thermochim. Acta, 2015, vol. 622, p. 82.
Villani, A.R., Brunetti, B., and Vincenzo, P., J. Chem. Eng. Data, 2000, vol. 45, p. 823.
Motalov, V.B., Dunaev, A.M., Tsybert, A.O., Kudin, L.S., Butman, M.F., and Kramer, K.W., Int. J. Mass Spectrom., 2017, vol. 417, p. 29.
Xiang-Yun, W., Tian Zhu, J., Goudiakas, J., and Fuger, J., J. Chem. Thermodyn., 1988, vol. 20, p. 1195.
Lezhava, S.A., Extended Abstracts of Cand. Sci. (Chem.) Dissertation, Moscow: Moscow State Univ., 1992.
Dudchik, G.P., Polyachenok, O.G., and Novikov, G.I., Zh. Neorg. Khim., 1969, vol. 14, p. 3165.
Makhmadmurodov, A., Temurova, N., Sharipov, A., Izv. Akad. Nauk Tadzh. SSR, Otd. Fiz.-Mat. Geol.-Khim. Nauk, 1989, no. 1, p. 39.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by A. Ivanov
Rights and permissions
About this article
Cite this article
Osina, E.L., Gorokhov, L.N. & Osin, S.B. Thermodynamics of the Evaporation of Yttrium Triiodide in the Form of YI3 and Y2I6 Molecules. High Temp 58, 694–698 (2020). https://doi.org/10.1134/S0018151X20050065
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0018151X20050065