Abstract
Abstract Single crystals of Cs3Ln7Te12 (Ln = Sm, Gd, Tb) have been grown accidentally through the reaction of Ln and Te with a CsCl or Cs2Te3 flux at elevated temperatures. The crystal structures have been determined from single crystal X-ray diffraction data. These compounds, which are isostructural with Rb3Yb7Se12, crystallize in space group Pnnm of the orthorhombic system with two molecules in the following cells: Cs3Sm7Te12, a=13.750(6), b=28.332(7), c=4.473(3) A, T=293 K; Cs3Gd7Te12, a=13.6064(13), b=28.209(3), c=4.4324(4) A, T=153 K; Cs3Tb7Te12, a=13.5708(16), b=28.116(3), c=4.4147(5) A, T=153 K.
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