Abstract A new member of the A 2 I B II C IV X 4 compound family, Na2MgSnS4, has been synthesized by ball milling of the binary sulfides SnS, Na2S, and MgS with elemental sulfur in a high-energy planetary mill, followed by annealing in an atmosphere of H2S (T = 600 °C/3 h). Na2MgSnS4 adopts the NaCrS2-type structure (rhombohedral, space group R 3 ¯ $\overline{3}$ m) with a = 3.7496(11) and c = 19.9130(6) Å. The Na atoms occupy Wyckoff position 3b, whereas the Mg and Sn atoms are statistically distributed on the cation sites 3a; all cations are surrounded by six sulfur atoms.

中文翻译：

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Na2MgSnS4 – A2IBIICIVX4 化合物家族的新成员

摘要 A 2 IB II C IV X 4 化合物家族的一个新成员，Na2MgSnS4，已通过球磨二元硫化物 SnS、Na2S 和 MgS 与元素硫在高能行星磨中合成，然后在H2S 气氛 (T = 600 °C/3 h)。Na2MgSnS4 采用 NaCrS2 型结构（菱形，空间群 R 3 ¯ $\overline{3}$ m），a = 3.7496(11) 和 c = 19.9130(6) Å。Na 原子占据 Wyckoff 位置 3b，而 Mg 和 Sn 原子统计分布在阳离子位点 3a 上；所有阳离子都被六个硫原子包围。