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Moscow University Chemistry Bulletin

, Volume 74, Issue 3, pp 134–137 | Cite as

Synthesis, Crystal Structure, and Thermodynamic Functions of GeSnSb4Te8

  • H. R. GurbanovEmail author
  • M. B. AdigezalovaEmail author
  • A. N. MamedovEmail author
  • S. A. Guliyeva
Article
  • 2 Downloads

Abstract

A quaternary compound GeSnSb4Te8 formed in the GeSnSb2Te4–SnSb2Te4 system in a ratio of GeSnSb2Te4 : SnSb2Te4 = 1 : 1 is studied for the first time with various physicochemical methods and thermodynamic calculations in a wide temperature range. The compound GeSnSb4Te8 melts congruently at 950 K. The enthalpy of the formation Δ\(H_{{298}}^{0},\) standard entropy \(S_{{298}}^{0},\) and isobaric heat capacity \(c_{{p,298}}^{0}\) of this compound are –254.3 kJ mol–1, 787.2 J mol–1 K–1, and 342.6 J mol–1 K–1, respectively. Single crystals of GeSnSb4Te8 are obtained via chemical transport reactions. The unit cell parameters of the GeSnSb4Te8 compound crystallized in a rhombic syngony are as follows: a = 4.92 Å, b = 9.70 Å, c = 11.28 Å, space group is Pnnm, V = 837.44 Å3, and Z = 2.

Keywords:

GeSnSb4Te8 compound single crystals crystal structure thermodynamic characteristics 

Notes

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Copyright information

© Allerton Press, Inc. 2019

Authors and Affiliations

  1. 1.Azerbaijan State Oil and Industrial UniversityBakuAzerbaijan
  2. 2.Nagiev Institute of Catalysis and Inorganic Chemistry, Azerbaijan National Academy of SciencesBakuAzerbaijan
  3. 3.Azerbaijan State Pedagogical UniversityBakuAzerbaijan

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