ChemInform Abstract: Three New Chalcohalides, Ba4Ge2PbS8Br2, Ba4Ge2PbSe8Br2 and Ba4Ge2SnS8Br2: Syntheses, Crystal Structures, Band Gaps, and Electronic Structures.
Abstract:Three New Chalcohalides, Ba 4Ge2PbS8Br2, Ba4Ge2PbSe8Br2 and Ba4Ge2SnS8Br2: Syntheses, Crystal Structures, Band Gaps, and Electronic Structures. -Single crystals of the new title compounds are prepared from mixtures of BaQ (Q: S, Se), MQ (M: Sn, Pb), GeQ 2, and NaBr (Ar, silica tubes, 1123 K, 50 h). The compounds are characterized by powder and single crystal XRD, diffuse reflectance spectroscopy, and DFT electronic structure calculations. They crystallize isostructurally in the orthorhombic space group Pnma wi… Show more
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