Abstract
AbstractThe sulfide La4Cd4In2S13 in the quaternary RE/M/N/Q (RE = rare‐earth metal; M = Zn, Cd; N = Ga, In; Q = chalcogenides) system was prepared from stoichiometric mixtures of the elements by solid‐state reactions at 1223 K in an evacuated silica tube. The La4Cd4In2S13, crystallizing in the Pbam space group, is isostructural with Pb4Bi4In2S13. The structure of La4Cd4In2S13 consists of double chains of CdS6 octahedra extending along [001] direction that are interconnected by single chains of InS6 octahedra by edge‐sharing into 1D ribbons. These ribbons are further fused by the infinite one‐dimensional chains of InS4 tetrahedra by corner‐sharing into Z‐shaped [Cd4In2S13]12– layers perpendicular to the b direction separated by the La3+ ions. UV/Vis/NIR diffuse reflectance spectroscopy study shows its optical gap of around 2.27 eV.
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