Abstract
The heat capacity of triphenylantimony diacrylate Ph3Sb(O2CCH=CH2)2 was studied in an adiabatic vacuum calorimeter at 6–350 K and differential scanning calorimeter at 330–450 K. Melting was revealed at these temperatures; the melting point was estimated at 428.4 ± 0.5 K. It was accompanied by the partial decomposition of the substance. The low-temperature (20 K ≤ T ≤ 50 K) heat capacity was treated using the Debye theory of the heat capacity of solids and its multifractal model. The type of the structure topology was determined. The standard thermodynamic functions C o p (T), H o(T) − H o(0), S o(T), and G o(T) − H o(0) of the compound in the crystal state were calculated from the obtained experimental data in the range from T → 0 to 428 K. The standard entropy of the formation of the crystalline compound Ph3Sb(O2CCH=CH2)2 at T = 298.15 K was determined.
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Original Russian Text © I.A. Letyanina, A.V. Markin, N.N. Smirnova, A.V. Gushchin, D.V. Shashkin, 2012, published in Zhurnal Fizicheskoi Khimii, 2012, Vol. 86, No. 8, pp. 1329–1335.
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Letyanina, I.A., Markin, A.V., Smirnova, N.N. et al. Thermodynamic characteristics of triphenylantimony diacrylate. Russ. J. Phys. Chem. 86, 1189–1195 (2012). https://doi.org/10.1134/S0036024412080079
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DOI: https://doi.org/10.1134/S0036024412080079