Abstract
The solid solution Sn24As x P19.3-x I8 in the range of compositions x from 0 to 16 was synthesized. The crystal structure was refined for seven compositions of the solid solution at —100 °C. All samples crystallize in the cubic space group Pm3 n with the unit cell parameters a = 10.9358(2)—11.1495(2) Å and belong to the clathrate-I structure type. The distribution of the phosphorus and arsenic atoms over two independent crystallographic positions within the clathrate framework was analyzed. The difference in the structure of the substituted clathrates with the cationic and anionic clathrate frameworks is considered.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 730–734, April, 2009.
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Kelm, E.A., Zaikina, Y.V., Dikarev, E.V. et al. Distribution of phosphorus and arsenic atoms in the solid solution Sn24As x P19.3-x I8 with the structure of clathrate-I. Russ Chem Bull 58, 746–750 (2009). https://doi.org/10.1007/s11172-009-0089-0
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DOI: https://doi.org/10.1007/s11172-009-0089-0