Abstract
According to powder X-ray diffraction data, the crystal structures of compounds SrLnCuS3 (Ln = Er, Yb) have been refined by minimizing the derivative difference in the anisotropic approximation for all atoms. Crystals are orthorhombic, space group Cmcm, structure type KZrCuS3: a = 3.93128(3) Å, b = 12.9709(1) Å, c = 10.1161(1) Å, V = 515.843(9) Å3, ρcalc = 5.337 g/cm3, Z = 4, RDDM = 3.73%, RF = 2.06% (SrErCuS3); a = 3.91448(4) Å, b = 12.9554(1) Å, c = 10.0332(1) Å, V = 508.842(8) Å3, ρcalc = 5.487 g/cm3, Z = 4, RDDM = 3.56%, RF = 1.48% (SrYbCuS3). The structure of SrLnCuS3 is described by [LnCuS3] twodimensional layers formed by distorted CuS4 tetrahedra and LnS6 octahedra with Sr2+ ions residing between the layers. The compounds are transparent for IR radiation in the range 3200–1800 cm–1.
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Original Russian Text © A.V. Ruseikina, L.A. Solov’ev, E.O. Galenko, M.V. Grigor’ev, 2018, published in Zhurnal Neorganicheskoi Khimii, 2018, Vol. 63, No. 9, pp. 1204–1211.
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Ruseikina, A.V., Solov’ev, L.A., Galenko, E.O. et al. Refined Crystal Structures of SrLnCuS3 (Ln = Er, Yb). Russ. J. Inorg. Chem. 63, 1225–1231 (2018). https://doi.org/10.1134/S0036023618090140
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DOI: https://doi.org/10.1134/S0036023618090140